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A micrometer, sometimes known as a micrometer screw gauge (MSG), is a device incorporating a calibrated screw widely used for accurate measurement of components [1] in mechanical engineering and machining as well as most mechanical trades, along with other metrological instruments such as dial, vernier, and digital calipers.
Lufkin is a brand featuring primarily measurement tools such as calipers, gauges, micrometers, and measuring tapes. Lufkin is a brand of Apex Tool Group . History
Digital caliper. Rather than a rack and pinion, digital calipers use a linear encoder. A liquid-crystal display shows the measurement, which often can switch units between millimeters and fractional or decimal inches. All provide for zeroing the display at any point along the slide, allowing the same sort of differential measurements as with ...
Direct reading tools such as rules, scales, and vernier calipers, Micrometer tools based on screw threads, Indicator tools based on clockwork gear movements, Electronic measuring tools based on transducers. Many of these are digital versions of their mechanical predecessors, as with a digital caliper. [4]
Micrometers are often, but not always, in the form of calipers. Profile gauge or contour gauge a tool for recording the cross-sectional shape of a surface. Radius gauge, also known as a fillet gauge a tool used to measure the radius of an object. Radius gauges require a bright light behind the object to be measured.
The L. S. Starrett Company is an American manufacturer of tools and instruments used by machinists, tool and die makers, and the construction industry. The company was founded by businessman and inventor Laroy Sunderland Starrett in 1880. The company patented such items as the sliding combination square, bench vises, and a shoe hook fastener.