Abstract: A magnetically-coupled stirring apparatus is provided. The stirring apparatus includes a rotor including at least one rotor magnet, with the rotor being positioned within a chamber. The stirring apparatus further includes an offset stirrer device positioned outside of the chamber. The offset stirrer device includes a shaft including a first end and a second end, with a stirring device axis being offset from a rotor axis, one or more paddle portions extending from the second end, and at least one stirrer magnet affixed to the first end. The at least one rotor magnet magnetically interacts with the at least one stirrer magnet. Rotation of the rotor induces rotation of the offset stirrer device.

Abstract: The present invention provides a geographical data collecting device, including a distance measuring unit 5 for projecting a distance measuring light and for measuring a distance to an object to be measured, an image pickup unit 3 for taking an image in a measuring direction, a display unit 6 for displaying an image picked up, a touch panel installed to match a position of screen of the display unit, a tilt sensor 11 for detecting a tilting in a measuring direction, an azimuth sensor 12 for detecting a horizontal angle in the measuring direction, and a control arithmetic unit 8, wherein the control arithmetic unit displays a scale to indicate horizontal and vertical lines on the display unit and controls the scale display so that the scale always indicates the horizontal and the vertical lines in the image based on a result of detection of tilting from the tilt sensor.

Abstract: A control unit calculates a difference between a displacement of a belt detected by an encoder and a predetermined target value, calculates a pulse frequency of a driving pulse signal based on a feedback control based on the difference and a feed-forward control based on a reference driving pulse frequency, sets a control range of the feedback control to be equal to or smaller than a frequency of one rotation of a driven roller, and controls driving of a pulse motor such that the belt moves at a constant speed.

Abstract: A simple self-contained, hand-held instrument for reading an azimuth or bearing in relation to the earth's magnetic field either out in the field or on the water with substantial accuracy. Means are provided that places the far object into the same focal plane (or focal point) as the close up bearings on the compass disc face, thus allowing the eye to instantly see both images without adjustment between near-sight and far-sight. Means are also provided for the adjustment of the instrument for the local variation or declination of the earth's magnetic field versus that of true north.

Abstract: A working position measuring system, comprising a rotary laser device for irradiating and rotating a laser beam and a photodetection sensor device for receiving the laser beam and for detecting a working position, wherein the rotary laser device comprises a laser projector for projecting at least two fan-shaped beams with at least one beam tilted, and the photodetection sensor device comprises at least one photodetection unit for receiving the fan-shaped beams and an arithmetic unit for calculating an elevation angle relative to the rotary laser device based on photodetection signals produced when the photodetection unit receives the light beam.

Abstract: On a circuit-board intended for constant-wire-length (CWL) bonding, one or more special “test” pairs of bonding pads are provided along with, in each case, a series of markings adjacent the pads. In use, the board is populated with CWL bonds (this includes the normal circuit-related RF bond-pads as well as the test bond-pads) and the test bonds are distorted so that the bond-wires in question lie aligned against the markings. The alignment position relative to the markings indicates whether the bond-wires for the whole board are of correct or incorrect length. Measurement may be either absolute, in which case the markings are associated with a scale indication, or relative, in which case one of the markings will usually be visibly distinguished from the rest in some way. Depending on the length determination, the bond-forming device (e.g.

Abstract: A system for visually pointing out locations on a three-dimensional structure such as an airframe of an aircraft includes a laser head that traverses an elongate track erected to pass through or adjacent to the structure. The laser head is traversed and stopped at various positions along the track, and from each position the laser head is calibrated by directing the laser beam onto three or more reference locations on the structure whose nominal coordinates are known in a reference coordinate system such as used in a CAD-CAM definition of the structure. The laser head is operable to determine in its own internal coordinate system the direction of the laser bean to each reference location and the distance to the reference location, and from this information a calibration is determined for relating measurements made by the laser head to the reference coordinate system.

Abstract: The sight comprises a support adapted for mounting onto an instrument to be aimed at a target, an optical device mounted onto the support for creating an image including a first sighting mark at a first finite distance with respect to the optical device, and a device mounted on to the support for providing a second sighting mark at a finite distance with respect to the first sighting mark. The instrument is aimed at the target by aligning the sighting marks. Since at least the first sighting mark is an image, its position can be chosen to improve the accuracy of aiming by alignment of the marks without having to physically accommodate the first mark.

Abstract: The apparatus of the invention is arranged to include facing table members, each having first and second pivotally mounted table plates relative to each table member to accommodate orientation of the tables with leveling and compass structure mounted to each table to enhance alignment. A sighting structure is arranged to include a light emitting housing to provide for alignment between the tables, as well as a range finder structure arranged to indicate spacing between the tables.

Abstract: A rendezvous docking optical sensor system for calculating a coordinate position/attitude of chaser and target satellites in accordance with simple calculation equations without performing a complex process such as an image process so as to allow a high-speed calculation process and for realizing a high-reliability system which does not require a high-speed CPU. In the target satellite, a light source is provided which has a function whereby the entire visual field is scanned with a knife edge having edges orthogonal to each other, and in the chaser satellite, a plurality of detectors are provided which form a pattern. Further, there are provided a processing circuit, a computer and a control section which measure the light-transmitting and light-shielding timings of the knife edge so as to calculate and control the coordinate position/attitude of the satellites.

Abstract: In laser surveying system has a laser measuring unit which is operable independently of a laser projector, a laser spot pattern is first determined by using the laser measuring unit and projected onto the working face of an object structure by driving the laser projector. While marking the working face with the laser spot pattern formed by the laser projector to execute the desired construction work, the laser measuring unit is turned toward a different measuring object so as to independently make other measurements. Thus, point marking and measurement on different objects can be rationally effected at one time.

Abstract: An optical sighting instrument having a main optical path including an objective lens, an eyepiece lens and a beamsplitter for combining or superimposing images. At least three image planes are defined with reference to the main optical path and the beamsplitter, and at least one of the three image planes is optically superimposed with the other two by the combining effect of the beamsplitter. Movable indicia elements are positioned in two of the image planes, and a fixed indicia element is positioned in the third one of the image planes. As a result, images of all three of the indicia elements are superimposed for viewing through the eyepiece lens, and the image of the fixed indicia element serves as a sighting reference. Illustratively, one of the movable indicia elements is a magnetic compass, the other of the movable indicia elements is a magnetic declination adjustment, and the fixed indicia element is a cross-hair sight.

Abstract: There is described a navigation aid for use in sailing vessels. The navigation aid comprising a casing having at least one side wall, the side wall having an aperture, and at least one end wall, the end wall also having an aperture. The casing encloses at least one reflective surface such as a mirror movably mounted on a linked frame in the form of an elongate member formed with two end sections, and a central section, the central section being formed to receive the reflective surface. Light entering the aid via the aperture in the side wall will be reflected off of the reflected surface through the aperture in the end wall. Thus an object positioned at the side of the casing can be viewed through the aperture in the end wall. The aperture in the side wall comprises a static marker which may be aligned with objects viewed through the aid for a range of pre-set angles, between the reflective surface and the central axis of the casing.

Abstract: The apparatus comprises a sighting unit, such as helmet 10 carrying a cathode-ray tube 11 and a semi-reflecting screen 13 enabling a user to view a display superimposed on an outside scene. The sighting unit carries a detector unit 15 which determines the movements of the helmet 10 without reference to apparatus external to the helmet, and preferably comprising some form of gyroscopic apparatus. The helmet also carries a boresight detector 16 which forms part of correction means operable to correct automatically from time to time for errors in the output of the detector unit.

Abstract: The invention is directed to an angle-measuring instrument such as a theodolite, tacheometer or the like having a coarse-fine drive arrangement for presetting a circle part of a graduated circle to a predetermined read-out value. In a preferred embodiment, a coaxial coarse-fine drive arrangement is actuated by a single control knob which is part of an adjustable drive which can be operated in two positions. In the first position, the adjustable drive functions as a coarse drive and includes a spur gear that meshes with a gear on the carrier of the graduated circle to permit adjusting the circle part to obtain a coarse setting thereof. When the control knob and adjustable drive are moved into the second position, the drive becomes completely disengaged from the carrier and functions as a fine drive that operates on a plane-parallel plate pivotally mounted in the read-out optical transmission path of the instrument to finely adjust the light rays passing therealong.

Abstract: A water sealing device suitable for use when a control rod drive housing welded to a stub tube and extends through a wall of a reactor pressure vessel is replaced, singly or with the stub tube, by a new one, including a sealing cylinder temporarily inserted in a control rod guide tube opening for providing a cylindrical space in which the control rod drive housing is located to shut out water in a core from the vicinity of the control rod drive housing.

Abstract: An improved impersonal eyepiece for astronomic positioning is affixed to an optical viewing device to provide a means for observing the position of a celestial object at timed intervals. The viewing device produces a source image of the celestial object and a light source in the eyepiece is energized at timed intervals by a control circuit to illuminate a reticle mask and to thereby superimpose a reticle reference image on the source image during each of the timed intervals. The position of the celestial object with respect to the illuminated reticle is noted during each timed interval and the data so obtained is used to define a reference position.

Abstract: An alignment device for aligning the boresight axis of armament with the line-of-sight axis of an optical sight including a novel collimating apparatus for field use. The collimating apparatus includes a collimator and a collimated light beam generator. The collimator includes an objective lens having its optical axis parallel to one of the axes to be aligned, a translucent screen for rear projection and a projection lens between the objective lens and the screen. A remote collimated light beam generator includes a battery energized incandescent light bulb, a projection reticle, and an objective lens for collimating the light source, the optical axis of the lens being parallel to the second of the axes to be aligned. The angular displacement between the axes is indicated by the position of a light spot on the screen.

Abstract: An angle measuring device comprises a base, a telescope seated thereupon for rotation about an axis, a graduated circle having a line division, a micrometer for subdividing said line division, and photoelectric scanners for detecting angular values from said line division and from said micrometer. A graduated plate provided with a reticle is located in said telescope. Said reticle has a zone limited by two line marks which are arranged in parallel and symmetrically to and on either side of one of the reticle lines. Said two lines are spaced from said reticle line by a width which is at least double the size of one division interval of the graduated circle line division.