Resolution 0.01mm/.0005″, 0.001mm/0.00005″, 0.0005mm/.00002″.
Repeatability 0.5um. Measuring force 5-10N.
Flatness of measuring faces 0.3um. Parallelism of measuring faces 0.5um.
Ratchet stop
Non-rotating spindle, suitable for cylinders.
Quick measurement: one turn of sleeve or ratchet stop makes 2mm spindle feed.
Carbide measuring faces

Insize 3241-4, DEPTH MICROMETER, 0-4", base 3.996_.669", 6928640326738
3M 83980, Roloc Disc Pad TR, Extra Hard 4 in 5/8 -11 Internal, 7000119300 