The carbide tipped tubular inside micrometer is an extension rod type that offers interchangeable extensions with cylindrical gage rods that are spring-mounted in protective sleeves so the measuring range can be extended. It has a measuring range of 1.9685 to 19.685" (50 to 500 mm).

The carbide tipped tubular inside micrometer is an extension rod type that offers interchangeable extensions with cylindrical gage rods that are spring-mounted in protective sleeves so the measuring range can be extended. It has a measuring range of 1.9685 to 19.685" (50 to 500 mm).