Ford 9" Axle Shaft Gauge

Part Number: OPASG9 

This gauge bolts on to a ford 9" axle housing and shows you where the shafts will end up along with the pinion. The slit you see is the center of pinion. The rectangular box shows the gap that would naturally be between the axle shafts. You really only do need 75% of spline engagement so you can measure just to the edge of the box and get round down about 1/8".