DCC Concepts DCG-BB1485 Finescale Wheel Back-to-Back Gauge 14.85mm
14.85mm OO gauge back to back gauge.
Back-to-back gauges are used to check that the wheels are correctly spaced apart. Adjust your wheels to the correct gauge settings for reliable operation though points.
14.85mm back-to-back is used for finescale OO modelling and is especially useful for setting wheels on kit-built rolling stock and when using scale type three-link couplings. This gauge has been designed for use with NMRA RP-25-88 0.088in tread width wheels.
Wheels set too wide or too narrow will not run through points properly and can derail on plain track. The back-to-back gauge sits between the wheels, which should fit against each face when correctly gauged for OO/HO 16.5mm gauge track.