This OO/On3 Scale pocket size gauge is designed by the NMRA (National Model Railroad Association). All of the dimensions (wheels, track, flange ways and points) on your track are able to be checked using this tool. It can help with troubleshooting issues when your train is not running smoothly.
NMRA Standards Gauge – OO/On3 Scale
Original price was: $19.16.$12.92Current price is: $12.92.
Sale!43 in stock
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