Description
The Mitutoyo 124-801 Interchangeable Ball Anvil-Spindle Set has the following specifications:
Diameter of Ball Anvil: 0.8mm
Gear Module: 0.5-0.55
Pitch Diameter: 50
Carbide Tipped
Features:
Measures over-pin diameter of gears with precision steel (carbide) ball-tipped measuring faces.
Interchangeable ball anvil-spindle tips for various gear modules (0.5 – 5.25) are optional.

