Mitutoyo 619052 Plain Jaw For Square Gage Block, 0.5" Length

The Mitutoyo 619052 plain jaw is for use with square gage blocks to build a measuring instrument for machining tasks and calibration of tools. This item can be used to measure inside or outside diameters. It is constructed of steel for durability and the surfaces are lapped for accuracy. The base width of this instrument is 24.7 mm, the tab width is 9 mm, the total height is 39.9 mm, and the thickness is 0.5".

Gage blocks (also called gauge blocks, Jo blocks, Hoke blocks, and Johansson gauges) are precision ground and lapped metal or ceramic blocks, used for calibrating precision measuring equipment and as a length standard in manufacturing. Gage blocks are square or rectangular in shape, with flat and parallel measuring surfaces, and usually have an engraved unique serial number and nominal length (provided in either inches or millimeters). They often come in sets with blocks of varying lengths, so that many different standard lengths can be created by stacking and wringing them. Wringing is the process of sliding blocks together with a small amount of pressure, in order to create a longer gage block stack.

Mitutoyo manufactures precision measuring tools, metrology equipment, and related systems. The company, founded in Tokyo in 1934, formed Mitutoyo America Corporation in 1963 with headquarters in Aurora, IL.