Abstract: A tooth mold is selected by operating a device consisting of a card having a first and second side and a plurality of strips disposed therebetween. Each side of the card and each side of the strip is provided with descriptive material for specific data. The sides of the card are also provided with windows so that manipulation of the strips will provide the necessary form of the mold.

Abstract: A slide rule for ascertaining the state of acid-base equilibrium has three slides moveable within a frame, each with visible scales on one side for entering the respective three haemogasanalytical parameters, pH, PaCO.sub.2 and HCO.sub.3 Indicia, including symbols and colors on the rear sides of the slides, are visible through windows on the rear of the frame for indicating the state of acid-base equilibrium.

Abstract: A retirement calculator for calculating a salary replacement value independent of current salary and a method of computing a total salary replacement value are disclosed. The retirement calculator is made up of a sleeve having an open end and a plurality of windows, and the calculator has an insert with a plurality of age values and a plurality of preliminary salary replacement values printed upon it. When the insert is inserted or positioned in the open end of the sleeve, one of the age values is visible through one of the windows on the sleeve. The preliminary salary replacement value corresponding to the visible age value is then visible in another window.

Abstract: A transposition rule for musical theory for the visual indication of the sequence of notes of musical scales and/or chords in the various keys of a tone system. The transposition rule includes an elongated base member which is provided with fixed scales, wherein the scales include the notes of the tone system arranged with a uniform division, and replaceable sliding scales which are displaceably guided in the base member and are provided with the sequences of notes of the musical scale and of the chords in a division corresponding to the division of the fixed scales. The slide member is arranged in the base member in an on-edge position.

Abstract: Disclosed is a manually operable calculator for determining a fourth value on the basis of three variables. According to one example, the calculator is used to determine the total storage available for a recording medium consisting of several units, such as hard disks or magneto optical disks. Specifically, values for total storage are displayed in response to inputting the capacity of each disk, the number of disks and the data recording rate. According to the invention, the calculator comprises a slide member upon which two rotating wheels are mounted along a common axis of rotation. The slide and wheels each have indicia corresponding to the three variables printed thereon. The indicia on the wheels is selected by rotation while the indicia on the slide is selected by moving the slide within a sleeve having openings formed therein.

Abstract: A new device including a new arrangement of dive tables is disclosed for planning non-decompression dives. The invention utilizes two separate scales, movable relative to one another. The first scale shows the pressure group scale, the bottom time or residual nitrogen scale and surface intervals aligned by relationship to pressure group. The second scale shows depth scales, repetitive dive group, pressure group, and no decompression time limits scale. Windows in the second scale allow the observation of pressure group scales and corresponding bottom time on alignment of bottom time from scale one with depth from the second scale.

Abstract: A slide rule comprises, to calculate the parameters of a stairway to be installed between lower and upper floor surfaces, (a) a first scale on a stationary body denoting the number of risers, (b) a second scale on a first slide denoting the elevation of the upper floor surface above the lower one and associated with a first arrow on the body, (c) a third scale on the body denoting tread depths and associated with a mark on the first slide, (d) a fourth scale on a second slide denoting the horizontal spread of the stairway and associated with a second arrow on the body, (e) a fifth scale on the body denoting the number of treads, and (f) a sixth scale on the second slide denoting the length of the stairwell and associated with a third arrow on the first slide. The first arrow indicates on the second scale the height of the risers when the number of risers on the first scale is aligned with the elevation of the upper floor surface on the second scale.

Abstract: A device for providing the modulus and loss factor values of a damping material based upon temperature and frequency which includes (i) an insert having (a) temperature isotherms on one side, and (b) graphs of the modulus and loss factor values for the damping material as a variable of temperature and frequency on the other side, and (ii) a sleeve for the insert which has (aa) a temperature isotherm display window for displaying the temperature isotherms on the insert, (bb) a frequency scale proximate the temperature isotherm display window, and (cc) a means for highlighting a modulus value and a loss factor value from the modulus and loss factor graphs provided on the insert.

Abstract: The invention relates to an improved slide rule type of apparatus that provides visual solutions to trigonometric problems. The invention provides a cheaper to make and easier to read trigonometric slide rule.

Abstract: A hand operated calculator is provided for estimating a length of a patch cord necessary to extend between any two of a plurality of connection locations of spaced apart frames in a distribution bay. The calculator includes three members which are movable relative to one another. Each of the members carries various indicia which when aligned indicate an optimum amount of patch cord necessary to extend between indicated connection locations of spaced apart frames.

Abstract: A manual calculator useful in registering and converting whole and fractional numbers from one numbering system to another numbering system in which a plurality of slide members are arranged in an array within a cover, with each said slide member being movable relative to the cover between first and second positions. The slide members each bear indicia indicative of the selected ones of two states, and the cover defines an elongate window in which the indicia borne by the slide members are visible in an array indicative of a selected number series in a first numbering system.

Abstract: There is disclosed herein a slide calculator for determination of flash-to-background distance for studio photography when using color filters over the flash. By use of the calculator, known factors, such as lens f-stop, film speed, flash guide number (GN), background density (darkness), desired degree of color (including shades of gray and white) saturation of said background and filter exposure factors can be used to determine the working distance of a background-flash with a color filter over the flash. An electronic flash meter is not required.The calculator includes a front panel with a window-like aperture and a back panel. Two slide members are positioned and movable between the front and back panels. Indicia is provided on the front panel and is generally arranged adjacent the window like aperture. Indicia is also provided on the slide members and is arranged for exposure at the window.

Abstract: A contract estimating system includes a digitizer ruler divided into a plurality of equally spaced increments. The ruler generates an output signal representing the distance along the ruler at a point touched by a hand held probe. A digitizer board carries a menu thereon including a plurality of indicia such as words, pictures and numbers representing different component parts and sizes and scale factors and generates an output signal corresponding to one of the indicia when touched by the probe. A computer automatically counts the number of each size component part and calculates the total length of pipes and similar components measured by the ruler. The results calculated by the computer can be displayed on a CRT and/or printed on a printer.

Abstract: A slide rule for selecting bearing materials has a base plate, a fixed cursor having first, second and third portions spaced apart from one another and fixedly attached to the base plate, a first sliding ruler slidably mounted between the first and second portions of the fixed cursor, an indicator cursor having an indicator cursor line and fixed to the first sliding ruler, a second sliding ruler slidably mounted between the second and third portions of the fixed cursor, and a fixed ruler mounted on the opposite side to the second sliding ruler with the third portion of the fixed cursor interposed therebetween. The fixed cursor has a fixed cursor line in the vicinity of its left end. The first sliding ruler has logarithmic graduations which indicate levels of bearing surface pressure. The second sliding ruler has logarithmic graduations which indicate sliding speeds, PV values and periods of lifetime of various bearing materials.

Abstract: The object of the invention is to provide a slide calculator to make the determination of flash-to-subject working distances (WD) easy and accurate for amateur and professional photographers. Light sources other than flash can be used. The calculator uses known factors such as lens f-stop, film speed, light ratio, flash guide number (GN), flash power setting and filter exposure factors to determine working distances even when using multiple flashes simultaneously. The indicia on the slides and the indicia adjacent the appropriate windows on the panels are arranged in a predetermined manner and relationship to each other to permit the desired working distance to be determined accurately. Working distances for several flashes (each flash having a different purpose) can be determined and their affect on each other is compensated for in the calculations. Then the several flashes can be used in combination to achieve a desired lighting effect with correct exposure.

Abstract: A bar code ruler is divided into a plurality of equally spaced increments each of which is marked by a machine readable bar code number. The ruler includes a plurality of recesses along the length thereof which cooperate with a spring biased ball carried by a slide member, the ball and recesses functioning as a detent to temporarily maintain the slide member in any desired position on the ruler. A hand held bar code reader is used to scan the bar code number on the ruler next to the slide with the edge of the slide functioning as a guide. A menu is also provided which includes a plurality of bar codes representing different component parts and sizes and a plurality of scale factors. The bar code reader can read the codes on the menu and on the ruler and feeds the information to a computer which counts the number of each size component part and which calculates the total length of pipes and similar components measured by the ruler.

Abstract: The present invention comprises a method and device for determining the ease with which a cow may give birth to a calf. It includes a slide rule having two movable slides and a fixed slide. The fixed slide includes a predicted calving score scale at one end thereof and a hoof circumference scale at the other end thereof. One of the moving slides includes a pelvic height scale, and the other moving slide includes a pelvic width scale.The method of the present invention involves measuring the pelvic height and pelvic width of a cow which is about to give birth to a calf. Next, the hoof circumference of the calf is measured prior to the time that it is born. The measured pelvic height, pelvic width, and hoof circumference are lined up on the slide rule and this results in indicators on the two movable slides being positioned adjacent a predicted calving score. The predicted calving score indicates the ease with which the cow will give birth to a calf.

Abstract: Apparatus for presenting tidetable data in a form visually readable to the average person in terms of the year, month, day and hour of occurrence, exacting information regarding current flow, i.e. the direction of current flow, the relative strength of current flow, and the period of current flow, at a given location. A preferred apparatus is comprised of a stator, and slide. The stator is suitably an elongate member along a horizontal side of which days of the week are scribed and scaled off in consecutive order, preferably with each daily period being further sub-divided into a morning period and evening period. The morning and evening periods are in turn sub-divided into hourly periods. A vertical scale provided on the stator ranges from a base line of zero upwardly, or in a positive direction, to a high point representative of the tidal range, and downwardly below the base line of 0, or in a negative direction, to a low point representative of the tidal range.

Abstract: This invention is a calculator that is particularly adapted to assist the user thereof in determining the location of waterfowl decoys relative to a duck blind. The calculator can be adjusted as wind direction dictates to give varying patterns under varying wind speeds and directions.

Abstract: A graphical logic computer is formed by apertured parameter slides that are moved back and forth in an envelope between an apertured cover member and a back panel. The cover member has an event network with paths that branch from and connect event windows formed by the apertures in the cover member. Event indicators are disposed on the back panel in position to be observed through the event windows provided none of the parameter slides obstructs its view. The parameter slides have logic windows, and the position of each parameter slide with a logic window or solid portion aligned with an event window corresponds to a logical input, the combination of two or more such imputs providing a logical output. For each combination of slide positions, a single path is observed through the event network to a logically determined result.

Abstract: An apparatus for macrophotograph comprising a camera, an electronic flash unit having a variable power output, a bracket for connecting the electronic flash unit to the camera in such manner that an angle formed between an axis passing through a lens of the camera and an axis passing through the flash unit is adjustable, and a calculator device for calculating an appropriate power setting for the flash unit. The calculator device has a first set of indicia for determining the reproduction ratio between the size of the object being photographed and the size of an image of the object on film, a first set of cooperating scales for adjusting actual film sensitivity to obtain an effective film sensitivity based on the reproduction ratio, a second set of cooperating scales correlating the effective film sensitivity with the f-stop or lens opening, and a third set of cooperating scales correlating the flash to subject distance with different power outputs of the flash unit.

Abstract: A calculating rule for obtaining ophthalmic values which are necessary for making eyeglasses, such as near-point distance, far-point distance, visual range, and addition, especially by which the eyeglasses-wearer can continue his work at the objective working distance with no asthenopia based on accommodation, from other ophthalmic values such as power of the ametropia, accommodation, etc., and for obtaining the resultant prism-diopter and base-direction of the prism for correcting heterophoria.

Abstract: A manually operable calculator for optimizing aircraft fuel consumption during descent from an actual altitude to a target altitude/distance. Altitude and distance scales are provided which are alignable to determine an uncorrected fuel efficient distance to commence a descent from a given altitude to a target location, with separate scales being provided for different airspeeds. Wind and weight correction scales are also provided which give a distance correction based upon the aircraft's weight, prevailing wind conditions, and the difference between beginning and target altitudes. In the preferred embodiment a plurality of altitude scales are employed, each scale having thereon an altitude display which is proportioned in accordance with a respective air speed and given in terms of mach speed for altitudes above a mach speed/I.A.S. transition point, and in terms of I.A.S. below that point. In this embodiment a single, linear distance scale is employed.

Abstract: A device is provided for measuring a subject's reaction to stimuli, i.e., to measure a subject's indication of attitude, opinion, judgement, preference, evaluation, feeling, intention, etc. when presented with a question, problem, fact, situation or other stimuli the subjective response to which is sought to be measured, said device comprising a first means having a defined viewing area and a colored means having at least one colored area adapted to be viewed in said viewing area wherein the extent of colored area viewable is variable and adapted to indicate the degree of a subject's reaction to a specific stimulus.

Abstract: A calculating device and a method of use thereof for determining the lead required to shoot a projectile at a moving target including cooperating logarithmic scales with indicia corresponding to the parameters target speed, range, projectile speed and lead displayed on a fixed and a slide member. Pictorial markers representative of various projectiles are disposed along the projectile velocity scale at locations corresponding to their normal speed and words descriptive of target speed are disposed at appropriate locations along the target speed scale so that calculations may be made by persons not having knowledge of game and projectile speeds in numerical terms. In accordance with one embodiment of the invention, the logarithmic scales are longitudinally disposed and the slide member may move relative to the fixed member in a horizontal direction. In accordance with other embodiments of the invention, the scales are disposed in a circular arc on members which may be rotated about a common axis.

Abstract: A hand-held calculating device for calculating Federal Income Taxes or the like includes substantially flat, elongate front and rear cover members and an insert card. Suitable structure is provided for joining the cover members with the card slidably insertable therebetween. The card bears a plurality of columns on both front and rear sides thereof, each column bearing a plurality of lines of tax figures or the like. A number of through apertures or windows are provided on both front and rear cover members for viewing selected lines and columns of figures on the insert card.

Abstract: A jump and reach physical training system is disclosed for measuring vertical height attained by a person jumping vertically from a standing position. A board is included, having visually perceptible full size scale with equally spaced increments thereon. The board includes appropriate mounting devices that allow it to be attached to a support above the floor surface and within standing reach of the jumper. The jumper stands flat on the floor and extends her arms upwardly to reach a maximum height on the board. The maximum reached height is indicated by the increment covered by the fingertips. Such increment is recorded on a held calculator. The individual then jumps upwardly in an effort to cover the board at the highest increment possible. The attendant observed this and notes the increment adjacent the high point of the jumper's reach. A corresponding increment is noted on the calculator which then provides a direct reading in terms of standard linear measurement.

Abstract: A diagram analyzing device is provided which is particularly useful in simultaneous interpretation of a plurality curves representing economic data. The curves are drawn to a common scale and provided on transparent sheets so that they can be superimposed one on the other, two or more at a time. A transparent calculating ruler used in association with the curves enables a user to analyze the data presented in the curves, i.e., to make calculations using the data, and to determine the inter-relationships between different sets of data, as well to discern trends and rates of growth. A table of events used in conjunction with the curves enables the data to be interpreted in light of events taking place in the economic world which are thought to influence this data. The calculating ruler contains two different logarithmic scales along the longitudinal edges thereof, with the number "1" providing a baseline for each scale, together with a plurality of time scales across the width thereof.

Abstract: A calculational aid is provided, in the form of a slide rule, to facilitate alculation of probable damage inflicted by a nuclear detonation. The particular apparatus permits calculation of any one or more of several damage-causing environments induced by nuclear detonations, and the consequential probability of damage resulting from such a detonation caused by the particularly calculated environment. Appropriate scales, properly spaced in particular relationships, are provided on a slide rule, thus providing a means for performing the calculational functions described above. Each of the possible environment-related damage calculations utilizes five parameters, and the present invention provides an apparatus for determining any one of the five parameters once the other four are known.

Abstract: There is disclosed herein a slide calculator for determination of factors related to metabolic requirements and used in determining parenteral feeding dosages. By use of the calculator, factors, such as basal energy expenditure, body surface area, ideal body weight, and carbohydrate dosage can be determined.The calculator includes a front panel and a back panel, each having several window-like apertures. A slide member is positioned and movable between the front and back panels. Indicia is provided on the front and back panels and is generally arranged adjacent the window-like apertures. Indicia is also provided on the slide member and is arranged for exposure at predetermined windows.In connection with each of the factors to be determined, the indicia on the slide and the indicia adjacent the appropriate window are arranged in a predetermined manner and relationship so as to permit the desired factor to be determined or calculated.

Abstract: A calculational aid is provided, in the form of a slide rule, to facilitate calculation of damages inflicted by a nuclear detonation. The particular apparatus permits calculation of the effects of an air blast, due to static overpressure, resulting from such a detonation. Appropriate scales, properly spaced in particular relationships, are provided on a slide rule, thus providing a means for performing the calculational functions described above. The calculations utilize five parameters, and the present invention provides an apparatus for determining any one of the five parameters once the other four are known.

Abstract: A tidal time indicator for determining tide times at various locations on a specific stretch of coastline comprises a pair of complementary charts. One of the charts is in the form of a map having index marks representing the various locations and which marks are spaced apart at distances corresponding to the known tidal time differences between the particular locations. The other chart is in the form of a rule having a time scale and index marks representing different days, each of these index marks being positioned relative to the time scale at the high or low tide time on the particular day for a reference location on the map chart. Thus, by positioning the rule chart relative to the map chart so as to register a date mark with an index mark on the map chart representing the reference location, the tide times at the other map locations can be read directly off the time scale adjacent their respective index marks on the map. To prepare the charts, information is obtained from Tide Tables.

Abstract: A biorhythmic slide rule which includes three separate movable slides wherein each slide includes different biorhythmic indicia. The slides are positionable in an overlying relationship with the indicia of all three of the slides being observable permitting a coordinated assemblage of the indica.

Abstract: A calculator is described which greatly simplifies the calculation of the required feeder head parameters, e.g. size, amount of antipiping compound, in casting metals. Only the size of the casting section being fed and the normalized inscribed circle relating thereto need to be measured.

Abstract: The present invention provides a slide rule for use by physicians, pharmacists and other medical or hospital personnel in determining and computing dosages to be administered by hyperalimentation. Total calories in the dosage, as well as final percent concentrations of base components and nutrient solutions in the dosage, may be determined.

Abstract: A calculator for sunlight effect having a base portion which holds two orthogonal plate slides of which one is transparent and provided with a double curve system enabling plotting of any day/hour combination, the curve system, being characteristic for a specific latitude, and this slide being positionable according to a relevant facade direction. On the base portion underneath the slide is printed a curve system indicative of the heating effect of the sun for any point in the double curve system. The other slide has a pointer curve which, when brought to register with any point of the double curve system, causes the other slide to assume a position indicative of the inclination of the shadow by the particular combination of parameters, and the other slide forms together with the base portion and further slides a slide rule calculator enabling a direct determination of the vertical shadow on a window as caused by an overhanging sunshade structure.

Abstract: Apparatus for simultaneously indicating the bio-rhythm curves which illustrate the emotional, mental, and physical cycles of a person comprising three slide elements, two of which are overlayed on the third and are transparent to simultaneously display all three curves in relationship to each other. The slides are mounted on a board having a transparent window with reference marks formed across in relation to a calendar scale indicating the days of the month and year. A reference scale is positioned near the start of the year for indicating the set point of the sliding scales and starting indicators are provided for calculating the starting day of each person's cycle in reference to his birthdate. A preferred embodiment has two scales such that the bio-rhythmic cycles of two persons may be compared to determine when they are compatible and incompatible.

Abstract: The present invention, a digital instant schedule computer or DISC, computes and displays symmetric schedules for assigning to stations the participants in an experiment or tournament. There is a master board and a plurality of slides, each of which can be inserted in said master board in several ways. Each insertion of a slide gives a juxtaposition of two scales: a scale on the slide which gives the indicia of the participants to be scheduled and a scale on the master board which gives indicia referring to the stations. Each admissible setting of a slide in the master board gives a subschedule which assigns each participant to the station opposite his indicium. The participant indicia and station indicia are displayed so that each participant can read off his station assignment.

Abstract: A slide rule guide enables immediate selection of the requisite individual different diameter, different length sections or segments of a multiple segment tapered fly fishing leader. An envelope forming side panels slidably receives a planar slide. A pair of elongated windows in line and at right angles to the direction of slide movement simultaneously display common columnar data on the face of the slide; the overall length of the leader, the tippet size, and in order from the butt end of the leader to the tippet end, the length and diameter of each leader segment or section.

Abstract: A biorhythm scale adapted to secure its operation and capable of directly observing the periodic day and the half-periodic day a physical, sensitive and intellectual rhythm for the individual or individuals in an accurate manner. The biorhythm calculator includes a guide interiorly of which a resilient non-slip element is firmly mounted not only to provide no slippage between vernier scales but also to eliminate an error in reading, and is comprised of a physical rhythm (P) scale, a sensitive rhythm (S) scale, an intellectual rhythm (I) scale, a day scale, and a month scale each of which is provided with racks at least one side thereof. Each of the vernier scales is slid over a fixed date scale indicative of the number of days in a month while in engagement of the racks with the non-slip element to thereby read out the biorhythm in the period as desired.

Abstract: An adjustable display having interworking parts whereby upon manipulation interference frequencies emitted from spurious harmonic and imaged electromagnetic radiators interfering with an intended or expected bracketed received frequency can be isolated and identified for later corrective action, such as elimination of the interference frequencies. A method for establishing emitted frequencies which might interfere with expected or intended targeted received frequencies in a receiver is also described and taught.

Abstract: A calculator and method for simply and quickly selecting appropriate spot type fire detectors and determining their preferred locations in a chosen space division in accordance with standard spacing ratings. The slide rule-like calculator includes a body member, a slide member slidably positioned within said body member, and in one embodiment a cursor slidably encompassing both the body member and slide member. The body member comprises at least one logarithmic scale representing one dimension of the space division and the slide member comprises at least one logarithmic scale representing the second dimension of the space division. Additionally, at least one fire detector scale, established with reference to standard space detector ratings, is included either on said body or slide member and an index or zero line is included on the other member.

Abstract: A calculator for determining optimum pavement design comprising a pair of slidable members and a plurality of scales associated therewith for determining the Design Traffic Number, Structural Number, depth requirements and costs.

Abstract: A currency converter formed of a fixed frame having a hollowed-out central area and two flat parallel surfaces wherein one surface defines two large generally parallel windows having a section of one reference line of indicia extending lengthwise across the top and bottom of each window wherein each section designates a range of currency of a reference country in the form of a logarithmic scale of currency values, a first and second small window positioned between the two large windows for displaying in one of the small windows an exchange rate comprising the currency value of the reference country for each unit of currency of a selected country and in the other small window an exchange rate comprising the units of currency of a selected country for each unit of currency of the reference country and with the other surface designing a plurality of apertures formed into at least two columns of spaced aligned apertures extending in a direction substantially perpendicular to the large windows, and a removeable sl

Abstract: Calculating device provided with scales for calculating radioactive doses and intensities, in which the scales are arranged for calculating the product of the intensity in a radioactive area at a given instant and a dose factor to be determined by experiment. This dose factor depends on the moment when the contaminated area is entered and on the time spent in the area.

Abstract: A hand calculator is described for converting monetary amounts from one currency to another comprising a slide with a plurality of parallelly disposed logarithmic scales thereon, a sleeve engaged with the slide and having an index means, and a cursor slidably engaged about a portion of the sleeve and having an index means thereon. For facilitating the calculation of gratuities as well as for converting currencies, the logarithmic scales are laterally oriented such that adjacent scales are displaced by a factor of 15 percent (or 0.15). In an alternative embodiment, the cursor has means for receiving a movable marker which may be used to mark a scale to which the user wishes to later refer.

Abstract: A calculating device and a mechanical method of calculating win, place and show odds for events such as horse races having pari-mutuel wagering systems. The apparatus includes a base member and a pair of slideable members laterally displaceable relative to the base member. A transparent cursor having a hairline located thereon is also laterally displaceable relative to the base member and to the slideable members. In an alternative embodiment, the members and the cursor are rotationally displaceable relative to the base member. The device is arranged so that indicia on a first scale which represent the amount in a wager pool of interest may be positioned relative to a second scale so that the hairline on the cursor may be adjusted to the amount bet on a horse of interest. The win odds of the horse of interest may be directly read beneath the cursor on a third scale and those odds may be calculated in terms of dollars returnable for a given bet on a fourth scale.

Abstract: A calculating device for use in conjunction with past performance data conventionally compiled and published on each active thoroughbred horse performing on U.S. racetracks, has three cooperating transparent slides each indexed visibly in terms of racehorse racing time and in speed ratings. The first, or innermost, slide is compound, with time and rating scales and time and distance columns on its obverse face, and assigned weight, age, post position, calendar, track condition and class data expressed in time difference increments on its reverse face. A second slide surrounds the first, and carries a speed rating index extending along the direction of slide motion. An outer slide movable relative to both others has transverse index lines based on seconds of time as expressed on the innermost slide and a table of conventional time performances for various segments of various races.

Abstract: A new and novel device for calculating the intrinsic, fair and proper value of real and financial assets according to predetermined mathematical relationships or formulas embodied in the device. The device may take the form of a linear sliding calculator, a slide chart, a rotary disc calculator, or any combination of these. The current market price of the real or financial asset is of incidental or no importance to the calculation of the intrinsic, fair and proper value.