![]() It’s got a clinometer in the compass vial. It’s the sunnato with a clear baseplate significantly larger than the compass and a folding mirror. The compass can also be used as a protractor, I think it’s an MC2. My Sunnato compass has a ruler divided 20 parts to the inch on one side with a mileage scale on the other, with a kilometer on the bottom-the latter two calibrated for 1:24000, and the inch rule is ideal for measuring distances in a 1:24000 map, but you can’t claim it’s calibrated for any single scale. You can buy 1/10 rules for engineering, machining and architectural use- engineering scales come 20 parts to the inch also- each part is 100’. Measure the distance, shift the decimal point 3 places, and double the number. This is the most common map scale used by hikers, engineers, foresters, geologists, wildland firefighters, etc in the continental US.Īny ruler graduated in 1/10” will work also, each 1/10 is 200’. I have several such “ devices”- I don’t recall if any are protractors as well. ![]() But not sure why you are having trouble finding one graduated for 1:24000. But I’m pretty comfortable doing math in my head. I’d be willing to make the corrections when needed. Uaing a 1:25000 scale instead of a 1:24000, would cause you would be off by 4%. One cubit on the map is 24000 cubits the ground. 1inch on the map is 24000 inches on the ground. You were OK until you said:”So for simplicity sake, 1=24000 in inches is 1" in real world is 24,000 feet on the map.”ġ:24000 is a ratio.
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