GPT-3000 SERIES - FLT Geosystems

4 DISTANCE MEASUREMENT4.7.4 Column Offset MeasurementIf it is possible to measure circumscription point (P1) of column directly, the distance to the center of thecolumn (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).P2PPP3● When setting the coordinate value for the occupied station, refer to Section 5.1 “Setting CoordinateValues of Occupied Point”.Example: Non-prism measurementOperating procedure Operation Display1 Press the [F4](P1↓) key from distance measuring [F4] HR: 120°30'40"mode to get the function on page 2.HD: 123.456 mVD: 5.678 mMEAS MODE NP/P P1↓OFSET S.O S/A P2↓2 Press the [F1](OFSET) key. [F1]3 Press the [F4](P↓) key. [F4]OFFSET 1/2F1:ANG.OFFSETF2:DIST.OFFSETF3:PLANE OFFSET P↓OFFSET 2/2F1:COLUMN OFFSETP↓4 Press the [F1](COLUMN OFFSET) key. [F1]COLUMN OFFSETCenterHD:mMEAS --- NP/P ---5 Press the [F3](NP/P) key to change to the nonprismmode.[F3]COLUMN OFFSETNCenterPHD:mMEAS --- NP/P ---4-13