Check & Adjust The Line Of Sight - Prexiso CL 20 Manual Del Usuario

2.2 Check & Adjust the line of sight
Checking the line of
sight
Operation
Step Description

With the circular bubble centred and
adjusted, the line of sight should be
horizontal.
1. Choose a distance of appr. 30 m
within a gentle terrain.
2. Set up a staff at both final points (A,
B).
3. Set up the instrument at point I
(halfway between A and B, just pass it
down) and centre the bubble.
4. Read both staffs.
Reading on A = 1.832 m
Reading on B = 1.616 m
ΔH = A - B = 0.216 m
CL 20/24/28/32 | 10
H=1.832
δ
A
d
1 003993_001
H=1.616
δ
I
1
B
d
EN