![]() Note that the northeast corner of Section 31 is also a benchmark. Here are a couple of pics of topo benchmarks Fortunately, you can search online for owner’s manuals. If you come across another benchmark reset your altimeter and proceed you wont have to make internal adjustments.īarometric pressures and differ from local to local areas. There are also two types of manuals to consider: motorcycle owner’s manuals and motorcycle repair service manuals.Owner’s Manuals From DealersSometimes when you buy cheap, used motorcycles, they’re older and the owner’s manual don’t necessarily come with the bike. Follow the map, check your elevation on the altimeter and find the contour line of the ridge, trail, road, creek, canyon, tree line what ever your following. This can be an extremely accurate method of navigation. Set your Thommen to the TOP of the bench mark and adjust to the altitude of the benchmark. ![]() On the topo map find the benchmark normally in black ink and note as " + 7360" or " + 2237m" if in meters. Benchmarks are located at many and various locations on the map. You will need to find and be at a bench mark (A concrete monument with a brass disc set in the top with USGS and elevation stamped in the disc). To be dead nuts on for a particular area you are going to need a 7 1/2 minute USGS topographic map for your area.
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