Analog gear tooth micrometer interchangeable anvil and spindles ball tips
Part No: DM-122901
Mechanical type is cheaper than digital one. but you must read the scale on the sleeve
Interchangeable different anvil and spindles, ball types
IP65 electronic gear tooth micrometer ball anvil
Part No: DM-192901
Digimatic Gear Tooth Micrometer is designed to measure the over-pin diameter of gears