Map Scan:1:25000
Distance(M) =Distance (mm)on the map X 25000÷1000
Map Scan:1:50000
Distance(M) =Distance (mm)on the map X 50000÷1000
10
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Measuring angles
Measure the right side of the object . Keeping in mind the value in degree that you defined ,slowly orientate the
compass towards the left side of the object.From the first value in degree deduct the second value you just defined .
The difference represent the value in degree of the angle between the left and right sides of the object.
N.B:Measure of the angle through the north .If the value 360°(north)come across the direct line on the Glow-in-the
Dark Circle(12) during your measuring operation,consider 360°=0°.The calculation will be 360°-second value in
degree +first value in degree.
Example:If the first value in degree is 4 and the second is 354,the angle will be 10.（360-354+4=10）.
TABLE FOR CALULATE
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