gage block

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gage block

[′gāj ‚bläk]
(design engineering)
A chrome steel block having two flat, parallel surfaces with the parallel distance between them being the size marked on the block to a guaranteed accuracy of a few millionths of an inch; used as the standard of precise lineal measurement for most manufacturing processes. Also known as precision block; size block.
References in periodicals archive ?
National standard for length in Slovenia comprise of 122-piece set of steel gauge blocks, ranging from 0,5 mm to 125 mm and some additional steel gauge blocks of length up to 1000 mm.
This definition is not exactly consistent with the definition of length of gauge blocks described in the American Society of Mechanical Engineers B89.
Broomfield's tungsten carbide gauge blocks are used by manufacturers - including aerospace engineers, glassmakers and the oil industry - who need to make precision measurements.
For mechanical calibration of gauge blocks by comparison of dissimilar materials a significant increase in measurement uncertainty is typical.
At NIST the Engineering Metrology Group still calibrates a lot of gauge blocks, around 4,500 a year, but the average number in a customer order has been dropping for some years.
For example, consider a hand held micrometer that is calibrated for measuring work-pieces with flat and parallel surfaces by measuring several calibrated gauge blocks (with surfaces larger than the micrometer anvil size).
Providing traceability to the SI metre, gauge blocks are among the most popular length standards being used across the world.
Equipment for ultrasonic testing (UT unit, ultrasound thickness, gauge blocks, basic angled probe and probe TOFD, etc.
Contract notice: Comparator for gauge blocks up to 100 mm and set special gauge blocks for length calibration laboratory.
Tenders are invited for Electronic Calibration Gauge Blocks
Contract notice: Supply of Equipment for ultrasonic testing (ultrasound device, ultrasound thickness gauge, gauge blocks, the basic angle of the probe and tofd probes, etc.
Contract notice: Supply of Equipment for ultrasonic testing (ultrasound device, ultrasound thickness gauges, gauge blocks, base angle of the probe and tofd probes, etc.