3M 26135, PPS Series 2.0 Adapter, Type S40, Trapezoidal Thread, 7100135335 
Insize 3241-3, DEPTH MICROMETER, 0-3″, base 3.996_.669″, 6928640355417
$174.16
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.
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