Abstract: A probe card fits in a system for testing a micro-electro-mechanical device having an element sensitive to a magnetic field. The probe card is formed by a PCB having a through-opening and probe tips for electrically contacting the micro-electro-mechanical device. A housing structure is received within the through-opening. The housing structure includes a planar peripheral region surrounding seats that protrude and extend at least partly into the through-opening. Magnetic elements are arranged in the seats, with the magnetic elements configured to generate a test magnetic field for testing operation of the micro-electro-mechanical device.

Abstract: Methods and apparatus to determine a distance to a target using coarse and fine delay estimation based on a narrowband transmit signal are disclosed. An example apparatus includes a transducer to receive a reference signal and a reflected signal, the reflected signal being the reference signal after being reflected of a target; a filter to generate a band-pass reference signal and a band-pass reflected signal by filtering (A) reference signal samples associated with the reference signal and (B) reflected signal samples associated with the reflected signal; a correlator to generate a first correlation by correlating the reference signal samples with the reflected signal samples and a second correlation by correlating the band-pass reference signal with the band-pass reflected signal; and a delay estimator to determine a distance to the target based on the first correlation (coarse delay) and the second correlation (fine delay) and output a signal including the distance to the target.

Abstract: A control system including: a base including a central axis; a knob rotatably connected to the base, the knob rotatable about the central axis; a plurality of individually indexed light emitting elements distributed along the base perimeter and arranged to direct light radially outward of the central axis; a diffuser arranged radially outward of the light emitting elements; a wireless communication module enclosed between the knob and base; and a processor enclosed between the knob and base, the processor connected to the wireless communication mechanism and plurality of light emitting elements, the processor configured to individually control each light emitting element based on a control signal received from the wireless communication mechanism.

Abstract: The dial structure includes a dial base having an optical transparency, on which a carbon pattern is formed, an uneven portion formed on a front surface of the dial base, having a convex and concave form representing a convex and concave form of the carbon pattern, and a background print layer formed on a back surface of the dial base excluding a portion to be an indicator portion, having a color tone of the carbon pattern.

Abstract: The subject matter disclosed and claimed herein, in one aspect thereof, is a manually operated dishwasher monitoring device that reduces the likelihood that dirty tableware will be prematurely removed from a dishwasher before being cleaned, or that dirty tableware will be inadvertently placed into a dishwasher with cleaned tableware before the clean tableware is removed. In a preferred embodiment of the present invention, the dishwasher monitoring device is comprised of an indicator, indicator washer, indicating plate, washer and attachment device positioned along a spindle, wherein said indicator and/or said indicating plate are repositionable between a first position and a second position.

Abstract: An indicating device includes a housing having a longitudinally extending cavity shaped to receive the container and an indicator member disposed in the cavity and having a longitudinally extending wall shaped to surround at least a portion of the container. The indicator member is rotatably mounted within the housing and is rotatable relative thereto about a longitudinal axis. The indicator member includes a driven gear. A drive gear is disposed in the housing and includes a drive portion selectively engaged with the driven gear. An actuator is adapted to move with the container and is selectively engaged with the drive gear.

Abstract: The touch-operating input device is configured so that when the control circuit turns on the main light source corresponding to each of the translucent operation buttons that can be operated, the control circuit, on condition that the translucent operation button corresponding to the main light source that is turned on is operated, turns off the sub-light source corresponding to the translucent operation button that is turned on simultaneously with the main light source. Ease of operation is increased by enabling the operator to distinguish operated translucent operation buttons from translucent operation buttons that have not been operated according to whether or not the main light sources are lit.

Abstract: A dial plate structure includes first and second dial plates, a rotary indicator and a cover member. The first dial plate has a cutout portion. The second dial plate is arranged under the first dial plate and has a plurality of function display portions exposed through the cutout portion. The rotary indicator is arranged between the first and second dial plates and has a function indicator to selectively indicate one of the function display portions by rotation. A part of the rotary indicator is exposed through the cutout portion. The cover member is arranged on the second dial plate. The plurality of function display sections are arranged radially outward than the rotary indicator. The cover member is arranged to face the outer periphery of the rotary indicator and to prevent the outer periphery of the rotary indicator from visually contacted through the cutout portion.

Abstract: [Problem] To provide an instrument dial and its manufacturing method wherein it is possible to shorten a print time and achieve a reduction in cost. [Means for Resolution] An instrument dial with index portions 5 provided in background portions 3 and 4 by subjecting a substrate 1 to printing includes an underlying portion 2 configured of a screen print layer provided on the substrate 1; a first background portion 3 which, being configured of a screen print layer formed on the underlying portion 2, does not include the index portions 5; and second background portions 4 which are configured of a digital print layer formed on the underlying portion 2 and, as well as including the index portions 5, are continuous with the first background portion 3.

Abstract: The present invention is a water filter pitcher equipped with a removable, replaceable filter cartridge and means to count the number of times the pitcher is filled with water, and also means to notify the user when the pitcher has filtered enough water to exhaust the filtering capacity of the filter cartridge so that the user can replace the filter cartridge when necessary but does not have to remember to change the cartridge at a specific interval or count the number of gallons filtered manually, and instead can rely on the water filter pitcher to track the amount of water filtered and inform the user when to change the filter cartridge.

Abstract: A status indicator includes a display disc with a pin located within a central portion if the display disc, a first colored section, and a second colored section. The status indicator also includes a lens unit with an opaque section and a non-opaque section to alternately reveal the first colored section or the second colored section such that either the first or the second colored section is visible from any angle within a hemisphere below the status indicator. The status indicator also includes an indicator cam configured to receive a linear force initiated by an actuator component and to translate the linear force to a rotational force on the pin. The rotational force causes the display disc to rotate from a first position to a second position that aligns the second colored section with the non-opaque section.

Abstract: An indicating device suitable for indicating a number of metered dosages of a substance that have been dispensed from or remain in a container. The indicating device includes at least one primary indicator member having primary dosage indicia, configured as numeric indicia, and a second indicator member having secondaiy dosage indicia, configured with at least two different colors. The primary and secondary indicator members are coaxially mounted. In one embodiment, a device for dispensing dosages of the substance also includes a dispenser housing and a container.

Abstract: A tamper-resistant indicator is disclosed. The indicator includes a front panel configured to be located on an outside surface of a door. The indicator also includes a back panel configured to be located on an inside surface of the door. The indicator also includes a turning indicator, including a springy living hinge, wherein said turning indicator has a front part disposed on the front panel and a back part disposed on the back panel, and the two parts communicate with each other via a rotatable axis or shaft member configured to pass through an opening bored through the door, and wherein the axis or shaft member is coupled between the front and back parts of the indicator, such that rotation of the back part of the indicator rotates the axis or shaft member, which in turn rotates the front part of the indicator.

Abstract: Watch provided with a multifunctional aperture display capable of displaying symbols corresponding to one or several special functions and to the date. The movement of the display discs is ensure by bidirectional motors and the display discs or mobiles have several series of digits of different colour for differentiating the display of the different functions.

Abstract: A bookmark or promotional device comprises a plurality of pockets aligned side-by-side with the opening of the pocket being at the edge of the bookmark. The pockets contain advertising or other promotional material as inserts. The devices are produced in different versions for different audiences and are distributed through a variety of channels generally free of charge to customers.

Abstract: An indicator for a powder or fluid dispenser device, the indicator including an indicator system and said indicator system comprising: a cover (1) provided with a viewing window (60); a first indicator element (2) that turns about an axis, said first indicator element (2) including first indicator means (120, 121); a second indicator element (5) that turns about an axis, said second indicator element (5) including second indicator means (50); and an interconnection element (3) that interconnects said first and second indicator elements (2, 5), in such a manner that it is the indicator means (120, 121; 50) of one of said two indicator elements (2, 5) that are visible initially in said viewing window (60) up to a predetermined number of actuations, after which it is the indicator means (50; 120, 121) of the other of said two indicator elements (2, 5) that become visible in the viewing window.

Abstract: An indicating device includes a drive member and a driven member. The driven member is non-rotatably immobilized by the successive engagement of a convex surface on the drive member with a plurality of concave surfaces on the driven member. The driven member further includes a plurality of protrusions that are successively received in a recess of the drive member as an engagement member engages the driven member and rotates the driven member. The driven member has dispensing indicia. In another aspect, an indicating device includes an indicator member having dispensing indicia. A stop member is selectively engaged with successive ones of a plurality of stop surfaces on the indicator member such that the indicator member is non-rotatable. Methods for indicating the amount of substance that have been dispensed from or remain in a container are also provided.

Abstract: A position indicator comprises: a first indicator pattern composed of a plurality of substantially identical first partial patterns periodically arranged in a direction of extension, and a second indicator pattern composed of a plurality of substantially identical second partial patterns periodically arranged in the direction of extension. The first partial patterns may extend, along a first line extending transversely to the direction of extension, and the second partial patterns may extend along a second line extending transversely to the first line and the direction of extension The first and second partial patterns may be each composed of plural sub-patterns disposed adjacent to one another in the direction of extension. The sub-patterns of each pair of sub-patterns of the respective partial pattern are different from each other.

Abstract: A bookmark or promotional device comprises a plurality of pockets aligned side-by-side with the opening of the pocket being at the edge of the bookmark. The pockets contain advertising or other promotional material as inserts. The devices are produced in different versions for different audiences and are distributed through a variety of channels generally free of charge to customers.

Abstract: An indicator for a powder or fluid dispenser device, the indicator including an indicator system and said indicator system comprising: a cover (1) provided with a viewing window (60); a first indicator element (2) that turns about an axis, said first indicator element (2) including first indicator means (120, 121); a second indicator element (5) that turns about an axis, said second indicator element (5) including second indicator means (50); and an interconnection element (3) that interconnects said first and second indicator elements (2, 5), in such a manner that it is the indicator means (120, 121; 50) of one of said two indicator elements (2, 5) that are visible initially in said viewing window (60) up to a predetermined number of actuations, after which it is the indicator means (50; 120, 121) of the other of said two indicator elements (2, 5) that become visible in the viewing window.

Abstract: An analog display instrument is provided, in particular for use in dashboards in motor vehicles, having an indicator disc mounted by a radial bearing such that the radial bearing allows the indicator disc to rotate. The indicator disc is fitted with a pointer which can be pivoted in front of a scale. The radial bearing comprises a sliding element and a guide element, with either of the slide element and the guide element having a ring structure and the other element having a holder which is suitable to hold the ring structure. The radial bearing is a journal bearing with the holder resting directly on a wall of the ring structure such that the ring structure may slide with respect to the holder.

Abstract: A position indicator may include a position indicator display and mechanism. A polymer housing houses the position indicator display and mechanism and a one-piece clear polymer cover encloses the position indicator display and mechanism in the polymer housing. The position indicator may further include a hinge and hand-operated latch that secures the one-piece clear polymer cover to the polymer housing such that the one-piece clear polymer cover can be opened without the use of tools.

Abstract: A cover for a power operated tool has visual warning indicia to indicate rotation of the tool to protect users from contact with rotating cutting elements of the tool. The cover may be a disc having a pair of opposite surfaces, each including brightly colored, spaced indicia. The cover is centrally apertured for mounting on the tool spindle to rotate with the cutting elements. A threaded fastener holds the cover in place. When the spindle is at rest, the spaced indicia are visible to observers. When the spindle is rotated the indicia also rotate to form the appearance of a bright, solid color on the cover thereby warning observers that the tool is in use. The indicia may also be positioned between the aperture and an outer margin of the cover to form the appearance of an annular stripe when the cover is rotated.

Abstract: An ink permeative layer is deposited so as to cover at least one of an obverse face and a reverse face of a substrate. Digital print data is prepared according to a design of the instrument panel including indicative scales, indicative numerals, indicative characters and indicative symbols on the instrument panel which are visually presented to a driver. Ink is jetted to the ink permeative layer in accordance with the digital print data. The design of the instrument panel is determined according to a request of the driver.

Abstract: A rotatable cutting tool with colored visual warning is provided. The cutting tool includes colored portions of at least two different colors. When the cutting tool is rotated above a predetermined speed, the individual colors are not separately discernable but instead appear as an apparent or blended color which serves as a visual warning.

Abstract: The test includes a test panel placed between and rotatably secured to a cover and a rear panel. The cover has two windows located adjacent each other. Located adjacent the periphery of the test panel are twelve labels. Below each label is a set of choices. When the cover is placed over the test panel and secured thereto the first set of choices and label should be aligned with their respective windows. To use the test, the person scratches the label located above the first set of choices and then immediately sniffs the label. The person then chooses the item which most closely corresponds with what he/she smells and marks it by darkening the circle located adjacent his/her choice. Once all of the labels have been smelled and the choices marked, the test panel is rotated once more. The correctly marked choices will appear in openings formed on the cover.

Abstract: A rotary direction indicator provided for use with a rotating element which causes the rotation of an associated member. The rotary direction indicator has an internally compliant body fixed in a normal to a central axis which has formed thereon a pair of arrows which appear to be three-dimensional moving in a clockwise direction. One of the three-dimensional arrows appears to plunge into the surface of the body while the other of three-dimensional arrows appear to rise out of the surface of the body thereby providing a visual indication of a correspondence between the direction of rotation of the rotary element and the movement of the associated member.

Abstract: A dispensing spoon comprising a handle, a scoop having an open mouth formed at one end of the handle, a powder leveling means in the form of a wiper part which is coupled integrally and flexibly to an opposite end of the handle remote from the scoop and which can be displaced manually in a sweep plane so as to sweep laterally over the mouth of the scoop for powder leveling purposes, and a counter which is automatically advanced by operation of the powder leveling means. The counter includes a counter disc having a plurality of numbers around its surface and is arranged to be indexed by one number when the wiper part is displaced to sweep over the scoop mouth to perform a powder leveling operation. The counter disk is journalled on the wiper part or the handle for rotation in a plane parallel to the sweep plane of the wiper part so that the numbers are displayed upwardly. The counter disc has on its underside a ratchet wheel having a plurality of teeth.

Abstract: A display device, in particular for a vehicle, having a pointer which can be actuated by a measuring mechanism for analog representation of measured values, the display device including fixed scale marks which are assigned to the pointer, and a display, arranged in a region over at least part of which the pointer travels, for representing variable information, it being possible to represent scale labeling on the display. In order to reduce the manufacturing costs of the display device and to improve its legibility, the scale marks are arranged outside a display region which can be actuated, and at least one region of the display extends along the scale marks so that it is possible to represent the scale labeling in this region.

Abstract: A camera has a rear cover part, and a rotatable counter dial with a numerical scale of exposure count indicia to be successively viewed. Each of the indicia has the same color. A label on the rear cover part is superimposed to the counter dial and has the same color as the indicia to render the indicia invisible in order to prevent them from being viewed. The label includes a viewing portion that is not the sane color as the indicia and is arranged to be superimposed successively to the indicia when the counter dial is rotated. As a result, the indicia are made successively visible in order to permit them to be successively viewed. Eye-readable information is imprinted on the label, and the counter dial is transparent to permit the information to be visible through the counter dial in order to be read.

Abstract: A camera has a rear cover part, a label on the rear cover part, and a numerical scale of exposure count indicia to be successively viewed. The numerical scale of exposure count indicia is located on the label, and each of the indicia has the same color. A color-absorbing optical filter is rotatable superimposed to the indicia and is a color that absorbs the color of the indicia to render the indicia invisible in order to prevent them from being viewed through the filter when light is reflected from the indicia to the filter. The filter includes a viewing portion that is arranged to be superimposed successively to the indicia when the filter is rotated and does not absorb the color of the indicia. As a result, the indicia are successively visible through the viewing portion in order to permit them to be successively viewed. Eye-readable information on the label is a color that is transmitted through the filter to permit the information to be read when light is reflected from the information to the filter.

Abstract: A speed adjusting device for a drill press includes a first variable pulley mounted to the motor shaft and a second variable pulley mounted to the output shaft with a belt connected between the two variable pulleys. A pressing member is mounted to the second variable pulley and the first end of the pressing member is pivotally connected to a fixed member and the second end of the pressing member is connected to a control device. The control device has a connecting member connected to the second end of the pressing member so that the pressing member exerts a force to the second variable pulley by operating the control device to adjust the effective diameter of the belt in the first and the second variable pulley.

Abstract: A fan speed indicator is provided including a conventional fan with a pull cord adapted to change a speed at which the fan is running upon being pulled. Further provided is mechanical mechanism for mechanically indicating the speed at which the fan is currently running.

Abstract: A fault indicator for use in conjunction with a load-break elbow connector includes a resilient mounting collar which wraps around the body of the fault indicator at a location overlying the arc-suppressing non-conductive margin between the electrically conductive sheath and the connecting end of the connector. An electrically conductive layer on the inside surface of the collar capacitively couples the circuitry of the fault indicator to the conductor within the connector to provide operating power to the fault indicator. A ground connection is provided by a second conductive layer on the collar which contacts the grounded connector sheath, or by a spring contact which extends from the fault indicator to the sheath. A voltage indicator is also disclosed using the same collar and capacitive coupling to the monitored conductor.

Abstract: A display (100) provides reversible contrasting indicia (112, 114) in order to accommodate an increased number of easily distinguishable indicia on the display. The display provides a first contrast mode (200) in which one set of indicia (112) become visually more prominent than another set (114) and a second contrast mode (300) in which the contrast of the first contrast mode is reversed. Selecting between the first and second contrast modes (200, 300) is controlled by backlighting of the display (100).

Abstract: A sidetrack mill is provided for drilling through a cased borehole to provide a sidetracked wellbore having a final diameter, the mill comprising: a pilot mill having a tapered cutting surface being, at its largest diameter, between about 50% and about 75% of the final diameter; a second stage cutting surface being, at its smallest diameter about the diameter of the maximum diameter of the pilot mill, and being at its largest diameter, at least five percent greater in diameter than the largest diameter of the pilot mill; and a final stage cutting surface being, at its largest diameter, about the final diameter, and at the smallest cutting surface diameter, being a diameter of at least about 5% smaller than the final diameter. This mill is can rapidly penetrated casings without requiring excessive torque. The milling can be accomplished with a single trip.

Abstract: This invention is to provide a display device for a vehicle with the pointer portion of light transmission type placed over characters etc, the value indicated by the pointer portion can be accurately read with high visibility. A display device for a vehicle comprises a dial and an indicating board laid on the dial. The dial includes a disk-shaped light transmitting portion, light transmitting characters and graduations outside the light transmitting portion, and an annular light transmitting portion outside the characters and the graduations The indicating board includes a light transmitting pointer's inner end portion and a light transmitting pointer's outer end portion which overlap the light transmitting portions of the dial, respectively, and an annular light transmitting portion which is laid over the characters and the graduations.

Abstract: A scale indication device includes a character plate having sets of characters printed on a front side thereof such that each set of characters has characters disposed about an eccentric circle having a predetermined radius. A scale plate is disposed adjacent the character plate. The scale plate has a window corresponding to each of the sets of characters such that only one of the characters in each set may be viewed through the window at a time. An eccentric rotation device is mounted on a gearbox and rotates the character plate such that different ones of the characters in each set may be viewed through the window. The rotation device includes a scale switching gear rotatable about an axis, a first engagement device formed on the scale switching gear at a distance from the axis equal to the predetermined radius, and a second engagement device formed on the character plate for rotatably engaging the first engagement device.

Abstract: A lid assembly for a portable water treatment device of the type including a vessel with an opened upper end and a replaceable filter cartridge adapted to be contained therein. A lid assembly is adapted to be attached to the opened upper end of the vessel above the replaceable filter cartridge and operable to monitor the number of times the water treatment device is used. The lid assembly includes a housing having a central aperture therethrough communicating with the filter cartridge. A gate member is reciprocally movable between a position closing the aperture in the housing and a position opening the aperture in the housing. In the opened position, water to be treated may be poured into the filter cartridge through the aperture. Indicator means are provided and are movable incrementally in response to movement of the gate member. The indicator means move one increment during a cyclic movement of the gate member from the closed position to the opened position and back to the closed position.

Abstract: An indicating mechanism is described. The mechanism is ideally suited for the indication of time but is also applicable to other indicating functions where changing information must be displayed. The mechanism is composed of a flexible belt bearing indicia and three supportive discs. As the discs are caused to rotate, the belt and any indicia on it will rotate. This rotation will be apparent to users who see or touch the indicia on the belt, thus providing an indicating function. The unique geometry of the belt gives two full circular discoidal surfaces for decoration. Typically only one of these surfaces will be visible to users as the other is disposed directly below it. This arrangement allows times within each 12 hour period in the 24 hour day cycle to be indicated uniquely while maintaining the conventional location of each AM and PM hour's representation of the clock face.

Abstract: A motorized toothbrush, which comprises a serving period indicating ring adjustably mounted on a brush handle and secured between a brush head and a power unit for the indication of the month a brand-new brush begins to use so that one can easily identify if a brush has been over-used.

Abstract: A gauge for indicating measurements including a dial plate provided with measurement scales, a central rotating shaft and an indicating plate. The dial plate is disposed in front of the indicating plate, with an arcuate slot opening formed in the dial plate so that a corresponding arcuate colored band provided on the indicating plate may be seen through the opening for unobstructed viewing of measured results as the indicating plate is driven by the shaft. The indicating plate may also be provided with an indicator which extends through the opening to prevent obstruction of the measurement scales during use.

Abstract: A combined tachometer/gear number indicator, preferably in further combination with a speedometer, is described for use on a motor vehicle for synchronizing engine speeds and vehicle speeds to avoid clutch wear when changing gears. A plurality of coaxial transparent dials carry gear number, engine speed and vehicle speed indicia, and markers are provided for indicating data.

Abstract: A mount is secured to an end of a cylindrical housing with a front side facing outward thereof. A knob is provided having a stem extending from one end and a gear secured to and extending radially outward from the end of the knob. An aperture is formed through the mount for receiving the stem of the knob with the knob located on the front side of the mount near one edge thereof. A generally cylindrical shaped face member has an inner side secured to the front side of the mount and an outer side facing outward thereof. The face member has an opening formed therethrough for receiving the knob and its gear such that the knob may be viewed from the opening from the outer side of the face member. The opening of the face member extends to one edge thereof such that a portion of the gear is accessable from the edge. An annular member is located around the face member and is supported by the face member for rotation in opposite directions relative to the face member.

Abstract: A cementing plug container and remote control system for enclosing and injecting cementing plugs into the casing and/or drill pipe of an oil or gas well, which includes a shaped housing containing one or more plugs and a plug release mechanism such as an air or hydraulic cylinder for each plug, by operation of appropriate valves located on a control panel remotely located from the cementing plug container. Passage of the plug or plugs from the upper segment of the housing and through the housing assembly bore is registered by a plug pass indicator.A method for injecting cementing plugs into casing and/or drill pipe in an oil or gas well by remote control using a cementing plug container having a removable dome, at least one remotely controlled plug release mechanism, and a plug pass indicator mechanism.

Abstract: A rotor for an electromagnetic indicator comprises a flat circular disk made of thin, pliable, nonmagnetic material. The disk has integral tabs extending out of diametrically opposite edges and a rib extends diametrically of the disk to outer ends of the tabs. The rib and tabs define T-shaped trunnions which engage in T-shaped slots in respective sides of a rotary magnet, and a journal block. The disk is fabricated from a single flat sheet having flat tabs extending outwardly of opposite edges. A V-shaped groove is made in the sheet extending centrally across the disk and tabs. Opposite sides of the groove are then brought together to form the rib with T-shaped trunnions at opposite edges of the disk.

Abstract: A workman's lift platform apparatus has a vertically swingable and extensible boom with a workman's platform at the outer end. A color coding indicating the amount of boom extension is provided on the fly section of the boom, visible to the workman in the platform, and an indicator plate having corresponding color coding is provided adjacent the controls on the platform. The indicator plate in the form of a drum is driven proportionately to the angular movement of the boom by a pair of sheathed, push-pull cables, or by a sheathed torsion cable. In other embodiments, the indicator plate is tilted in proportion to the angular movement of the boom by a sheathed push-pull cable or by a parallel bar linkage. A cursor is provided adjacent the indicator plate, and is part of a gravity-operated pendulum.

Abstract: A marine direction finding system is disclosed wherein a rotatable and calibrated dial is placed over a direction indicating dial of a radio direction finder. The radio direction finder indicates direction by illuminating a portion of its indicating dial. The direction of the radial signal received is referenced to a front of the boat which is calibrated as 0.degree.. The rotatable dial is preferably at least semitransparent and is calibrated at a first radius from 0.degree. to 360.degree. and at a second radius also from 0.degree. to 360.degree. but offset by 180.degree.. When a signal is received, the rotatable dial first radius marking is set to a 0.degree. marking on the direction finder in accordance with the current magnetic heading for both.

Abstract: An improved tape cassette containing markings on the edge of the tape which contrast with the color of the tape. When the tape edges form the tape reel face as the tape is wound on one hub of the cassette an easily seen pattern is formed. This pattern is readily visible even under poor conditions of visibility through the cassette window. During recorder/playback use the operator can quickly check to see if the tape is moving by noting the pattern movement when viewed in the window.

Abstract: A workman's lift platform apparatus has a vertically swingable and extensible boom with a workman's platform at the outer end. A color coding indicating the amount of boom extension is provided on the fly section of the boom, visible to the workman in the platform, and an indicator plate having corresponding color coding is provided adjacent the controls on the platform. A Bowden cable is connected to the indicator plate and the fly section, to move the indicator plate proportionately to the angle of the boom to the horizontal.