Wheel Gauge for Pine Derby Wood Cars

Our Wheel Go/No-go gauge will help you improve your race by providing a consistent and quick way to inspect derby wheels while the wheels are mounted on the car.  Inspection is a breeze once you understand how to use this tool and there will be no arguing about caliper bias. The proper way is to simply “wand” the Derby Wheel Gauge over a wheel.  If the wheel is smaller than the selected diameter, the wheel will pass through without issues.  If the wheel does not pass through then that means the wheel is LARGER than the selected diameters.  When you try and force the tool on the wheel, weight reduced wheels have enough “give / flex” in them to actually be squeezed inside measurement thus making them fail the inspection.  Improper use of the tool is why the wheel failed, not because the wheel failed.