Each set consists of inside micrometer head and a series of extension
pipes of different length, which are hardened, ground, micro-lapped and
heat insulated. Satin chrome finished head with positive locking clamp
and carbide measuring faces.
Micrometer head stroke: 25mm (1").
Graduation: 0.01mm (.001").
Instrument error: ±(3+qty of rod + L/50)µm.
L = Maximum measuring length