Topcon Marine Instruments GPT-2000 Manuel D’Utilisation

7-16

   7 DATA COLLECTION

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).

Press the [F3](MEAS) key and press the [F4]key to 
get to the next soft key page.

[F3]
[F4]

Press the [F1](OFSET) key.

[F1]

Press the [F4](P1

↓

) key.

[F4]

Press the [F1](COLUMN OFFSET)  key.

[F1]

Collimate the center of the column (P1) and press 
the [F1](MEAS) key.
Measuring will start.
After the measurement, angle measuring display 
of the left side (P2) will be shown.

Collimate 

P1

[F1]

 

2

3

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