Suunto Tandem manual Downhill m Uphill

First, find on the right-hand scale in the nomogram the point indicating the apparent height. Secondly find on the left- hand double scale the point indicating the ground point reading. Thirdly, connect these points. The corrected reading will be found from the pertinent middle scale

L-20

Downhill m

20

41

5 2

6

3

7Uphill

4

m	m
20	20
19	19
18
17	18
16

at the point of intersection. In this procedure the slope angle can be neglected as the left-hand ground point scale has been constructed so that both

8

9

10

11

5

6

7

15	17
14	16
13
12	15
11	14

the ground slope angle and the average eye level height of 1.6 m [5.5 ft] have

12 8

10 13

been taken into account.

13

14

15

16

17

18

19

20

21

9

10

11

12

13

14

15

16

9	12
8	11
7
	10
6
	9
5
	8
4
Corrected height	7
	6

18 Fig. 12. Base reading

Apparent height