Gauge Blocks & Sets

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Gauge blocks and sets are precision tools used to create exact lengths by stacking individual blocks. Rectangular gauge blocks, or Jo blocks, are crafted from metal or ceramic, featuring two precisely ground flat faces set at an exact distance. Square gauge blocks, known as Hoke blocks, also made of metal or ceramic, ensure accurate measurements with their opposing faces. Angle gauge blocks include a right angle for precise angle measurements. Cylindrical gauge blocks, with their flat, round shape and central hole, serve as spacers or setting standards. Gauge balls, perfectly spherical, are utilized for measuring the depth and outer diameter of tapered shafts.