3M 55574, Stikit Paper Disc Roll 236U, 6 in x NH 6 Hole, P180 C-weight, D/F, Die 600FH, 7000119565, 100 discs per roll 
Insize 3282-3, DISK MICROMETER, 2-3″, 6928640328107
$167.23
Graduation .0001″.
Measures root tangent length of gear.
Ratchet stop.
Supplied with setting standards (except with 0-1″).
Spindle lock.
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