3M 49941, Roloc Disc 361F, 80 YF-weight, TSM, 3 in, Die RS300VM, 7000148151 
Insize 3224-120, TUBULAR INSIDE MICROMETER, 40-120″, 6928640356810
$2,997.14
Graduation .001″
Accuracy: [.00005(7+n+L/2)]”, n=number of rods,L=maximum measuring length (inch).
Carbide measuring faces.
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