Map and Compass

1. Malcolm Cunningham Tararua Tramping Club Map and Compass

2. Getting a sphere onto a plane (Mercator projection)

3. Transverse Mercator Projection

4. Longitudinal lines (N-S) not necessarily vertical

5. There are three Norths • 1. True or Geographic North • 2. Grid North • 3. Magnetic North

6. True North & Grid North

7. Magnetic North

11. Map Legend

15. Scale

16. Map Coordinates

19. 26 27 18 17

20. 27 26 18 17

21. 27 26 0 1 2 3 4 5 6 7 8 9 0 18 0 9 8 7 6 5 4 3 2 1 0 17

22. 27 26 0 1 2 3 4 5 6 7 8 9 0 18 267178 0 9 8 7 6 5 4 3 2 1 0 17

24. Contour Lines

33. Index Contours

36. Scale

37. 1.3 km

38. 26 mm

39. 26 mm = 1.3 km

40. 6 mm = 0.3 km

41. MAP & COMPASS EXERCISE NO.1 ( Use map NZTopo50 BQ31) A) Grid References What feature is at Grid Reference 382218 ? • " " 412277? • " " 363293? B) Contour Lines • In Grid Square 3732, if you walked in a N.W. direction from Ohau Hill SpotHeight 243m, would you be ascending or descending? • Would you be crossing a steep slope or a gentle one? • If you walked in a N.E. direction to Ohau PLight, would you be ascending ordescending? • In Grid Square 3929, the lowest point is in which corner? NW, N, NE, E, SE, S,SW, or W • What height is it? • Which way is the Waiariki stream running in Grid Square 3823 ? C) Scale • How far is it between Outlook Hill trig in 3725 and Mt Misery trig in 3927? • How far is it between Mt Misery trig in 3927 and Terawhiti Hill trig in 3629?

42. MAP & COMPASS EXERCISE NO.1 ( Use map NZTopo50 BQ31) A) Grid References What feature is at Grid Reference 382218 ? Karori Rock light • " " 412277?Golf course • " " 363293?Terawhiti Hill B) Contour Lines • In Grid Square 3732, if you walked in a N.W. direction from Ohau Hill SpotHeight 243m, would you be ascending or descending? Descending • Would you be crossing a steep slope or a gentle one? Steep • If you walked in a N.E. direction to Ohau R Light, would you be ascending ordescending? Descending • In Grid Square 3929, the lowest point is in which corner? NW, N, NE, E, SE, S,SW, or W SW • What height is it? 100m • Which way is the Waiariki stream running in Grid Square 3823 ? 200o C) Scale • How far is it between Outlook Hill trig in 3725 and Mt Misery trig in 3927? 2100m • How far is it between Mt Misery trig in 3927 and Terawhiti Hill trig in 3629? 3.5km

43. The Compass

44. Magnetic needle (north end is red)

45. Direction of travel arrow

46. Rotatable dial

47. Orienting lines

48. Orienting arrows

49. Index line (bearing)

50. Base plate