3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956 
Insize 3229-7, TUBULAR INSIDE MICROMETER, 6-7″, 6928640328817
$139.50
Graduation .001″
Carbide measuring faces.
6 to 7″ Range
Accuracy: .00028″
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