40
dhd:
is to stake out the difference between horizontal
distance measured and it expected . A positive result indicates
that the measured horizontal distance is greater than the
expectation value. The lens should be moved to the instrument.
dvd:
is to stake out the difference between elevation
difference measured and it expected. A positive result indicates
that the measured elevation difference is greater than the
expectation value. The lens should be moved downwards
(excavation).
Every time finishing the stakeout, press [F4] to enter the
second page , and you can press [F2] to continue staking out or
press [DIST] to return to the distance measurement mode.
m/f/i:
switch the units of the distance displayed between
“meter”, “ feet”, “feet .inch”.
Other instructions: “
” is the current distance
measurement mode. Among them, the “
” indicates
measuring with prism, and the “
”indicates measuring
without prism.