Insize External Screw Thread Micrometers 3639-125 100-125mm 1pc

Type A (ratchet thimble)
The Insize 3639 External Screw Thread Micrometer is a linear measuring tool for the outer diameter of screws/bolts and helps to classify fastener components and material thickness.
With a classic enamel-coated frame design and Nonius scale markings, accuracy is guaranteed. This screw micrometer is certified to DIN 863 and manufactured in Göttingen, Germany.
The Insize 3639 External Screw Thread Micrometer uses a precision screw and ratchet mechanism with an accuracy of ±4μm. There are two types offered: Type A with a permanent anvil face and Type B with a removable anvil measuring face with a rod diameter of Ø8mm.
You can use an optional dial indicator for various quick measurement needs and determination of measurement parameters, or combine it as a jig with other measuring tools.