Outdoor Camping Map Measuring Gauge Scale Mileage Odometer Portable Multi-functional Measurement Instrument

This map scale mileage is designed with a roller on the bottom it is convenient to use just roll it on the map to read the distance. Compare to using ruler to measure it is much more accurate as well as more convenient to measure curve distance. You can use it at many occasions for example use it at survey construction camping outdoor survival and more. It has a strong and sturdy housing it can protect the measurement instrument well prolong its lifespan. Designed with small size and is light in weight it is conveinent to carry and store you can put it in your pocket backpack shoulder bag and more. Material: Aluminum alloy + ABS + Acrylic. Color: Black. Size: Show as picture. There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. 1* Map measuring gauge.