Map Measuring Meter Mini Opisometer Map Range Finder Distance Calculator Tools for Camping Hiking Cycling Hunting Outdoor Survival

The metal connector at the top is a nice touch point for the device. Unfortunately the partline on the plastic housing near the bottom of the device has a large gap which effects how well the measuring dial turns, making this tool difficult and inaccurate to use, unfortunately.

It’s a crude opisometer but can compensated for during amateur cartography. Professional cartographers should spend the extra money for one from Germany.

I returned this. Wasn’t able to get gauge to return to zero. Wheel wasn’t working to track the distance.

Please, ignore all reviews that suggest this works. It doesn't. Save your money, and the hassle of trying to return it. I thought I would take a chance given the relatively low price. My mistake, not to be repeated. If I could give it negative stars, I would. I am going to try to return it but even if I do get my money back that won't improve this review.Warning - if you do try to use it on a map or chart, you have to press it so hard to make the measuring wheel move that you will cut the paper map/chart. So if you made the same mistake as me and bought one, try it out on a scrap piece of paper first and you will see what I mean.