Topcon ES-101 - 20.4 Plane Offset Measurement

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20. OFFSET MEASUREMENT
Find distance and coordinate of a edge of a plane where direct measuring can not
be done.
Measure three random prism points to define the plane then sight the target point
(P0) to calculate distance and coordinate of the cross point between telescope
axis and of the defined plane.
• Target height of P1 to P3 is set to 0 automatically.
PROCEDURE
1. Enter the instrument station data.
"13.1 Entering Instrument
Station Data and Azimuth
Angle"
2. Press [OFFSET] in page three of
OBS mode to display <Offset>.
3. Select “Offset Plan” in <Offset>.
20.4 Plane Offset Measurement
Occ.Orien.
OffsetDist
OffsetAng.
Offset2D
Offset
Offset Plan