Description
Product Description: Marlco Thread Measuring Parallels Set – 4.1/2 to 40 Whitworth – pre-owned
Additional Info:
For checking effective diameter of external screw threads
Parallel pair sizes:
4.1/2 – 7 TPI
8 -13 TPI
14 – 20 TPI
22 – 30 TPI
32 – 40 TPI
Range: 4.1/2 – 40 TPI
Manufacturer: Marlco
Reviews
There are no reviews yet.