7-16
7 DATA COLLECTION
7.3.4 Column Offset Measurement
If it is possible to measure circumscription point (P1) of column directly, the distance to the center of the
column (P0), coordinate and direction angle can be calculated by measured circumscription points (P2)
and (P3).
The direction angle of the center of the column is 1/2 of total direction angle of circumscription points
(P2) and (P3).
Operating procedure
Operation
Display
1
Press the [F3](MEAS) key.
[F3]
2
Press the [F4](P1
↓
) key, [F1](OFSET) key.
[F4]
[F1]
3
Press the [F4](P1
↓
) key.
[F4]
4
Press the [F1](COLUMN OFFSET) key.
[F1]
5
Collimate the center of the column (P1) and press
the [F1](MEAS) key.
Measuring will start.
Collimate
P1
[F1]
After the measurement, angle measuring display
of the left side (P2) will be shown.
Prism
PT#
→
PT-11
PCODE :TOPCON
R.HT : 1.200 m
INPUT SRCH MEAS ALL
VH *SD NEZ P1
↓
OFSET PTL P2
↓
OFFSET 1/2
F1:ANG.OFFSET
F2:DIST.OFFSET
F3:PLANE OFFSET P
↓
OFFSET 2/2
F1:COLUMN OFFSET
P
↓
COLUMN OFFSET
Center
HD: m
MEAS --- --- ---
COLUMN OFFSET
Center
HD* [n] << m
>Measuring...
COLUMN OFFSET
Left
HR: 120°30'40"
--- --- --- SET
