OSET
HOLD
SFT
R/L
REP
S/H/V
DIST
REC
V / %
3. Operating keyboard and operating key
Keys Function 1 Function 2
OSET set horizontal angle 0 distance measurement
HOLD
R/L
V%
hold the horizontal
angle
repeat measurement
horizontal angle
turn on or off
illumination
select the second
function
switch horizontal
angle right or left
switch SD/HD/VD
display
percent grade of
vertical angle
record measurement
power switch
5
4. Preparative before measurement
4.1 Level the instrument
Level and center the instrument correctly to ensure the best
performance.