01-18-2014, 08:57 AM
It's not usual at all for Asian and European machine builders to use "inch" feed screws in machines for the North American (their largest) market. My Taiwanese Victor lathe is a good example. The lead screw is 4 TPI, the cross-slide is 5 TPI and gearing in the QCGB is oriented to combinations of inch thread pitches. All the other hardware on the machine is metric.