Gauge Blocks
Gauge Blocks-
Gauge Block Set
Gauge Blocks (also known as gage blocks, Johansson gauges, slip gauges, or Jo blocks) are for manufacturing products with precision lengths. The individual gauge block is a metal block that has been precisely ground and lapped to a specific thickness. Gauge blocks come in sets of blocks with a range of standard lengths. In use, the blocks are put next to each other to form a desired length. An important feature of gauge blocks is that they can be joined together with very little dimensional uncertainty. The blocks are joined by a sliding process called wringing, which causes their ultraflat surfaces to cling together. A small number of gauge blocks can be used to create accurate lengths within a wide range. By using 3 blocks from a set of 30 blocks, one may create any of the 1000 lengths from 3.000 to 3.999 mm in 0.001 mm steps (or .3000 to .3999 inches in 0.0001 inch steps). Gauge blocks were invented in 1896 by Swedish machinist Carl Edvard Johansson. They are used as a reference for the calibration of measuring equipment used in machine shops, such as micrometers, sine bars, calipers, and dial indicators (when used in an inspection role). Gauge blocks are the main means of length standardization used in many industries.
7 Items
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Individual steel gauge blocks (200-300mm)
Individual metric rectangular steel gauge block made by Anyi
4 Items
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Individual metric rectangular steel gauge block (125-300mm)
Individual steel gauge block made by Anyi Instrument
6 Items