Map Reading – Measuring Distance

1. Map Reading –Measuring Distance

2. Estimation of East to West, North to South and diagonal distances on a 1:50,000 scale map by use of grid lines 3 x 1.5km = 4 km approx. Approx. 1.5km 4km 2km 1.5km 3km

3. 86 87 88 89 90 91 92 93 50' 4° 1 0 1 2 3 4 KILOMETRES STATUTE MILES 1 0 1 2 NAUTICAL MILES 1 0 1 2 3 Scale Line

4. 86 87 88 89 90 91 92 93 50' 4° 1 0 1 2 3 4 KILOMETRES B STATUTE MILES A 1 0 1 2 NAUTICAL MILES 1 0 1 2 3 Scale Line

5. 1 0 1 2 3 A B Move paper until the mark ‘B’ is against a whole division Read distance from B to A 2 whole km + 0.6km = 2.6km

6. Set start point of paper here A B S t r i p o f p a p e r A B Mark first bend

7. Mark next point here C A B Pivot paper around B C A B B A

8. 1 0 1 2 3 A B C Move paper until the mark ‘C’ is against a whole division Read distance from C to A 2 whole km + 0.6km = 2.6km

9. B Set start point of string here A 1 0 1 2 3 Move string starting against a whole division If string is too long, then pinch at end point ‘B’ to mark length

10. Any questions?