Reduce Derailments with this Large Scale Track and Wheel Gauge
For good operation, track and wheels must conform to NMRA specifications. This handy, precision-made tool checks track gauge, wheel spacing, flangeways, guardrail position and switch points for proper dimensions. Includes 2 spirit levels to check for grade and tip, plus instructions for use. Overall size: 4-1/4 inches x 2-7/8 inches x 3/4 inch thick. For 45mm/G/No.1 gauge track and wheels only.