Fowler 52-437-006 Hardened Steel Adjustable Parallel 6 Pairs Set, 6″ L X 0.125″ Thick Review
The Fowler 54-565-233 High-Accuracy Ultima Bore Gauging System has a measurement range of 7.878 to 8.27″ and is accurate to + or – 0.00006″. Resolution is 0.00001″ and the measuring depth is 3.15″. The gauge
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