The invention is a tool for measuring the distance and angle between two points on two surfaces to measure position of the points and surfaces relative to one another to provide the user with angle and distance measurements which fully define the relationship between the surfaces and points without additional calculations.

A one dimensional measuring machine includes a scale having graduations, a mover that has a light source configured to emit light to the graduations of the scale and a light receiving element configured to receive the light having passed through the scale from the light source, and can move along the scale, a light amount information detector that detects information regarding a light amount of the light emitted to the scale from the light source while the mover moves along the scale, and a contamination detector that detects a degree of contamination of the scale, based the information regarding the light amount of the light detected by the light amount information detector.

A measurement device that allows all users to conveniently and discreetly determine appropriate general footwear measurements at any age is disclosed. The device may include a housing having a contact edge configured to receive the heel or a first side edge of the user's foot, a retractable tape configured to extend outwardly from the housing, and a toe flange proximate the distal end of the retractable tape that is configured to receive the toe or a second side edge of the user's foot. The retractable tape may have indicia of barleycorn units of measurement that can easily be used to determine footwear sizes (length and width) in English speaking countries.

The invention is a method and measuring device configured for measurement by comparing the an area of interest or object with an object of comparable size and/or shape. This invention may be most useful when recording and classifying evidence. The measuring device should be portable and comprised of a flat, straight elongated member with measuring indicia along one or both the measuring edges, wherein the measuring indicia corresponds with values with labels of the standard sizes of comparable objects. The measuring indicia extends along the length of the measuring edge and the labels indicate the closest sized object. Other measuring indicia along the length of the measuring edge may also correspond to standard measurement units. The method should directly correlate a measurement with a comparable object for the purpose of recording evidence.

A multipurpose screwdriver and bit holder tool, comprising an outer housing defining a longitudinal axis having channels on the outer periphery for storage of one or more screw bits, ensuring secure retention and easy accessibility; an ergonomic anti-slip handle, ensuring a comfortable grip and convenient tool access with an attachment for difficult to access areas; a Slide-in and slide-out screw bit design in the channels in the outer periphery of the tool, allowing for quick tool interchange, wherein the screw-bits retained in place in the channels; and an wrench cap equipped with a magnetic slide-lock mechanism for secure screw bit storage. The tool further comprises hex Sockets, wingnut too, wire-bender tool, bubble leveler, spoke wrench, rulers, double sided screw bits in the internal housing. The screwdriver and bit holder tool can be used with an attachment having more tools.

A cutter-used index assembly includes a cutting board, a pointer and at least one spring-biased detent. The cutting board includes at least one group of positioning bores and at least one groove in communication with the positioning bores. The groove is made with a diameter smaller than that of the positioning bores. The pointer is pivotally connected to the cutting board and includes at least one pointing tip. The pointing tip includes an aperture. The aperture includes an upper open end and a reduced lower open end. The at least one spring-biased detent includes comprising a ball inserted in the aperture and formed with a lower portion located out of the aperture. The lower portion of the ball is smoothly movable into one of the positioning bores from another along the groove.

A rotor position indicator system may include a side plate and a first rotor width indicator plate. The side plate may be positioned on a side of an earth moving milling machine, and the first rotor width indicator plate may be inset on an external face of the side plate. The first rotor width indicator plate may include a plurality of markings, with each marking corresponding to a rotor position.

Semiconductor manufacturing equipment includes a thickness calculation function, the thickness calculation function including a measurement value acquisition unit configured to acquire a plurality of measurement values at different measurement positions of the wafer from a thickness measurement function configured to measure a thickness of the wafer, a histogram data creation unit configured to create histogram data based on the plurality of measurement values, and a grade group extraction unit configured to extract a grade group from the histogram data, the grade group including sequential grades having frequencies equal to or greater than a predetermined frequency, the thickness calculation function further including a representative value calculation unit configured to calculate a representative value of a thickness of a measurement region based on the grades included in the extracted grade group.

A ruler assembly with multiple scales includes a ruler being an oblong plate with a top surface and a bottom surface and four lateral sides between the top surface and the bottom surface; at least two sides of the top and bottom surfaces being formed with scales; and at least one an oblong hole penetrated through the ruler; at least one side of the oblong hole being formed with scales. The scales are units of length or units of scale ratios which shows the ratio of a measured length with respect to a real length, and in that the measured length is a length of an object which is reduced from an original object with a predetermined ratio; or a side of the oblong hole is formed as a drawing with non-straight sides so as to present a pattern.

A service tool and method of using for calibrating a position of a cutting edge of a blade. The service tool may comprise an inward-side face disposed between a first face and a second face. The inward-side face may include a curved portion, a leg portion and a notch configured to receive the cutting edge. The first face includes a curved edge, a plurality of horizontal lines and a plurality of vertical lines. When the cutting edge is received in the notch, and the curved portion abuts the top face of a bolt, the plurality of horizontal lines is configured to measure a vertical distance from a center of the top face to the cutting edge, and the plurality of vertical lines is configured to measure a horizontal distance from the center of the top face to the cutting edge.