This gauge is used to remotely measure the side bearing clearance on freight cars.
The gage is 6 foot long, It may be used from either the side or end of the car.
- Turn the adjustment knob on the end of the gauge clockwise to collapse the gauge fingers to their retracted position
- From either the side or end of the freight car, move the gauge into position between the truck and freight car body bolsters
- Turn the gauge adjustment knob counter-clockwise until both fingers are tight against the truck and body bolster surfaces
- Remove the gauge, and use a tape measure or ruler to measure the distance between the gauging fingers.