Insize 3241-1, DEPTH MICROMETER, 0-1″, base 3.996_.669″, 6928640326721

Graduation: .001″.
Micrometer head accuracy: ?.00012″.
Rod accuracy: ?[.001+.0005(L/3)]”, L is the measuring range in inch.
Rods with flat end.
Ratchet stop.