NMRA Standards Gauge - N Scale

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This "N" Scale pocket size standards gauge is designed by the NMRA (National Model Railroad Association). All of the dimensions (wheels, track, flangeways and points) on your track and wheels are able to be checked using this tool, also assisting with necessary adjustments.This simple tool can help with trouble shooting issues when your train is not running smoothly, helping to eliminate derailments. It also comes with a plastic adapter for tunnel and structure minimum rail clearance measurements. Show more