Remote Elevation Measurement - Nikon DTM-502 Series Instruction Manual

4. Remote Elevation Measurement

3
Station point
Press the [5] key on the PRG menu to enter REM
function.
Input the Height of Target.
Sight the target point and press the [MSR1] or
[MSR2] key.
Loosen the vertical clamp, and turn the telescope to
aim at an arbitrary point.
Difference in elevation (Vh) is displayed.
• Height of target can be updated by REM measurement.
Take a measurement to the prism, sight the bottom of the prism pole and then press
the [ENT] key.
3-63
Arbitrary point
Z
θ
Sighting point
HD
A prism is required only at
the sighting (target) point.
Vh
VD
HT
Vh = HD·tan(90°–θ) – VD + HT