Compact map distance finder with a durable metal wheel. Built for quick, precise map measurements. - Simple, precise operation: place the metal wheel on the map card, roll between two points, and read the distance directly from the built in scale. - Portable and ergonomic: metal construction, card sized for pocket carry, and a sturdy grip for easy rolling. - Ready for outdoor use: ideal for hikers, travelers, and backpackers who plan routes on maps. - Fast, reliable distance calculation: measure between two points on any map and get an instant reading to support planning. - Compatible and high performance: works with standard map scales, offering smooth action and repeatable results. Use scenarios - Plan a hiking or backpacking route on a topo map, estimating distance and travel time. - Map a city walk during travel to estimate distance between landmarks. - Prep an expedition by checking distances to campsites or water sources on map sheets.