![Amazon.co.jp: Portable Compass,Handheld Map Range Finder,Roller Scale,Odometer,Small Roller Diagram,Roller Ruler,Distance Meter : Industrial & Scientific Amazon.co.jp: Portable Compass,Handheld Map Range Finder,Roller Scale,Odometer,Small Roller Diagram,Roller Ruler,Distance Meter : Industrial & Scientific](https://m.media-amazon.com/images/I/51pao06kyMS._AC_UF894,1000_QL80_.jpg)
Amazon.co.jp: Portable Compass,Handheld Map Range Finder,Roller Scale,Odometer,Small Roller Diagram,Roller Ruler,Distance Meter : Industrial & Scientific
![This device is used to measure lengths on maps. Simply roll it along streets you want to use and it tells you the distance. : r/mildlyinteresting This device is used to measure lengths on maps. Simply roll it along streets you want to use and it tells you the distance. : r/mildlyinteresting](https://i.redd.it/ts26wf1usec51.jpg)
This device is used to measure lengths on maps. Simply roll it along streets you want to use and it tells you the distance. : r/mildlyinteresting
![Map Meter, Mini Map Camping Compass Meter Gauge, Compass Distance Meter, Portable Rangefinder Odometer Distance Caculator Mapping Tool for Camping : Amazon.in: Sports, Fitness & Outdoors Map Meter, Mini Map Camping Compass Meter Gauge, Compass Distance Meter, Portable Rangefinder Odometer Distance Caculator Mapping Tool for Camping : Amazon.in: Sports, Fitness & Outdoors](https://m.media-amazon.com/images/I/51p8QguZzQL.jpg)