Northwest Short Line O/S 67-4 Quarterer Tool

Offers precision in quartering model railroad steam locomotive drivers up to 2" (50mm) diameter (90" in O scale, 55" in Large Scale) with axles up to 1/4" in diameter (see #64-4 for smaller drivers such as HO and small S). Minimum crank throw (distance from axle center to crankpin center) is .260" (6.6mm). This accurate but rugged tool is usable in nearly all applications since it is designed to work on the outside of the driver set. Because of this, large axle bearings, stepped axles, or large axle gears do not hamper the HP Quarterer in accurately quartering drivers. The model #67-4 will handle large S scale and O and some Large Scale locomotives. The crankpin bushings provided will fit driver crankpin screws of 2.0mm and 2.6mm thread. OD. These two sizes seem to cover most available O scale drivers. Custom-made crankpin bushings are available direct from NWSL for any other size. (S-O -LS scale models).