For measuring maps the quick and accurate way, the Scalex MapWheel is the perfect tool for taking scaled measurements from maps. It’s easy to use- simply choose the built-in scale factor that matches the map and roll the rugged roller wheel to instantly display your measurement. The MapWheel is designed for use on maps only, please see our PlanWheels for blueprints.
2 x AAA Batteries
/- 0.25% Accuracy
Audible Tone for Wheel Motion
Measures in km/miles/nautical miles
Low Battery Indicator