Back To Back Wheel Gauge 14.4mm For OO Scale

Great Accessory for any OO Guage layout The Wheel Gauge ensures the back to back measurements of model railway wheels are even.

This product is to adjust your wheelsets to prevent derailments and also ensuring your rolling stock travels through points and crossing without derailing or generating excessive movement and noise., within specification of 14.4mm +/- 0.05mm.