Mitutoyo 201-157 Dial Snap Gauge, 6-7" Range, Indicator Not Included For Go/No Go (Go/NG) tolerance inspection of diameters of cylinders and shafts Adjustable anvil provides up to 1 of positioning range Carbide anvils help promote long wear Chamfered anvil front edges ease insertion of a workpiece Dial indicator measures deviation from preset minimum tolerance (sold separately)