Leica Geosystems T100 - Manual (Page 26)

26 Simple measurements T105/T110-1.3.0en
8
12
Distance measuring with stadia lines
Wanted: Horizontal distance between station and target point.
Procedure:
1. Set up instrument above point A
and level up.
2. Erect levelling staff exactly vertical
on point B.
3. Aim on staff (z=i) and read staff
section L.
SIMPLE method ACCURATE method
Procedure:
Carry out steps 1 and 2 (see SIMPLE
method).
3. Aim on staff (z=i) and read staff
section L. Simultaneously, take
down zenith angle V.
Reading:
Upper distance line: 166.2
Lower distance line: 150.0
Difference L: 16.2
Difference L in [cm] equals distance
D in [m]
Result:
D = 100 x L
Result:
D = 100 x L x sin²V
;;
;;
;;
T100Z12a
T100Z12c
T100Z12b
A B
3.
V
» 90°/
100 gon
1.
2.
z
i
14
15
16
17
L
;;
;;;
;;
A
B
3.
V
z
i
D
D