An optical comparator (often called just a comparator in context) or profile projector is a device that applies the principles of optics to the inspection...

A blink comparator is a viewing apparatus formerly used by astronomers to find differences between two photographs of the night sky. It permits rapid switching...

various data comparators including cmp and diff A digital comparator An optical comparator Mathematical symbols used for comparison, for example can the equals...

a bolt can be measured with go/no-go gauges or, directly, with an optical comparator. As shown in the figure at right, threads of equal pitch and angle...

too small for direct visual inspection. For instance, a toolmaker's optical comparator will often include an option to measure in "minutes and seconds"....

James Hartness was president. There he helped Hartness to produce an optical comparator, an instrument for accurately checking the pitch, form, and lead of...

they have expanded their high-end metrology equipment including optical comparators, vision systems, laser measurement, force and material measurement...

the card. Laser schlieren deflectometry Mach–Zehnder interferometer Optical comparator Schlieren Schlieren photography Hooke, R., "Of a New Property in the...

technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications...

(coordinate-measuring machines), machine vision systems, laser trackers, and optical comparators. A CMM is based on CNC technology to automate measurement of Cartesian...

generate a digital model that can be compared against the CAD drawing optical comparators, which magnify the silhouette of a part onto a screen so small features...

A pocket comparator is an optical device for measuring and inspection comprising a loupe and a reticle. The instrument was developed and manufactured by...

are types of master gauges used to calibrate or set micrometers, optical comparators, or other gauging systems. Working gauges are used in the shop for...

for example, to inspect internal thread geometry in the way that an optical comparator can inspect external thread geometry. Conical micrometer anvils, specifically...

new products include devices targeted for industrial use such as optical comparators, autocollimators, profile projector and automated vision based systems...

incorporated advances in thread technology (furthered by the Hartness optical comparator) and Flanders's engineering calculations for gear-cutting machinery...

more complex and more sensitive measuring instruments, including optical comparators, form measuring equipment, and coordinate measuring machines (CMMs)...

metalworking tools including precision measuring tools such as an optical comparator. The lathes and other tools were marketed under the name "Box-Ford"...

An optical scan voting system is an electronic voting system and uses an optical scanner to read marked paper ballots and tally the results. While mark...

The Lovibond comparator is an example of a colorimeter made in Britain by The Tintometer Ltd. It was invented in the 19th century by Joseph Williams Lovibond...

analog-to-digital converter that uses a linear voltage ladder with a comparator at each "rung" of the ladder to compare the input voltage to successive...

X-rays Shadowgraph or shadowgram, an optical method that reveals non-uniformities in transparent media Optical comparator, a device that creates silhouettes...

Machinist square Marking blue Marking gauge Marking out Micrometer Optical comparator Radius gauge Ruler Sine bar Straightedge Surface plate Tape measure...

telescope-building. The Hartness Screw-Thread Comparator was for many years a profitable product for J&L. The optical comparator remains a standard means inspection...

by eye. The idea built on earlier work such as Carl Pulfrich's blink comparator used to help identify the former planet Pluto, and Hinman's work analysing...

they change over time (SN 1987A is a spectacular example). The blink comparator is an instrument that is used to compare two nearly identical photographs...

markings built into the eyepiece of an optical device such as a telescopic sight, spotting scope, theodolite, optical microscope or the screen of an oscilloscope...

A phase detector or phase comparator is a frequency mixer, analog multiplier or logic circuit that generates a signal which represents the difference in...

Machinist square Marking blue Marking gauge Marking out Micrometer Optical comparator Radius gauge Ruler Sine bar Straightedge Surface plate Tape measure...

capacitor circuit used to null the effects of mismatch offset in most CMOS comparator-based flash analog-to-digital converters Due to their unique coloration...