Topcon GM-100 Series User Manual

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12. DISTANCE MEASUREMENT
5. Press [STOP] to stop outputting data and return to OBS
mode.
An REM measurement is a function used to measure the height to a point where a target cannot be directly
installed such as power lines, overhead cables and bridges, etc.
The height of the target is calculated using the following formula.
Ht = h1 + h2
h2 = S sin z1 x cot z2 - S cos z1

• The items displayed as <Null> in the coordinate data are excluded from the calculation (Null is different from
0).
PROCEDURE
1. Set the target directly under or directly over the object and
measure the target height with a tape measure etc.
2. After inputting the target height, accurately sight the target.
“”
Press [MEAS] in page 1 of OBS mode to carry out
measurement.
The measured distance data (SD), vertical angle (ZA), and
horizontal angle (HA-R) are displayed.
Press [STOP] to stop the measurement.
12.6 REM Measurement
Zenith
Zenith

Topcon GM-100 Series Specifications

General

Brand	Topcon
Model	GM-100 Series
Category	Measuring Instruments
Language	English