Insize 3241-12, DEPTH MICROMETER, 0-12″, base 3.996_.669″, 6928640326752

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.