A Mitutoyo bore gauge designed exclusively for ID measurement. No dial gauge is supplied to allow for a specific choice to best suit the application. Interchangeable anvils enable a wide range of diameter measurement. Tungsten carbide contact point ensures high durability and wear resistance. High-accuracy measurement is aided by a large grip with a sponge-like structure that reduces heat transfer from the operator’s hand. Optional extension rods can be attached for measuring inside deep holes.