Insize 3594-4, DIGITAL NON-ROTATING SPINDLE DISK MICROMETER, 3-4″/75-100mm, 6928640375231

Resolution .00005″/0.001mm
Measure root tangent length of gear.
Non-rotating spindle
Button function: on/off, set, inch/mm, ABS/INC.
Data output. LR44 battery, automatic power off
Ratchet stop.
Supplied with setting standards.