Gauge Blocks

Gauge blocks are a set of blocks (in metal or ceramic) with a range of standard lengths. They are used as a system (or standard) for producing precision lengths. Gauge blocks can be made of metal or ceramic which can be joined together (known as winging) to create lengths, meaning most gauge blocks sets can create over 1000 combinations. Gauge blocks are also called gage blocks, Johansson gauges, slip gauges, or Jo blocks. Standards of grading include grading standards include: JIS B 7506-1997 (Japan)/DIN 861-1980 (Germany), ASME (US), BS 4311: Part 1: 1993 (UK). Gauge blocks are used in calibration with measuring equipment, formicrometers, sine bars, calipers, and dial indicators.