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4. Sight the first point on the line enclosing the area, and press
[OBS].
• The tilt screen is displayed if the instrument is out of level.
Level the instrument.
"7.2 Levelling"
5. Press [MEAS] to begin observation.
The measured values are displayed.
6. Press [OK] to enter the value of the first point in "01".
• Press [REC] in the second screen of step 5 to record code,
target height, and point name. The point name recorded
here will be displayed in "01".
7. Repeat steps 4 to 6 until all points have been measured.
Points on an enclosed area are observed in a clockwise or
counterclockwise direction.
For example, the area specified by entering point names 1,
2, 3, 4, 5 or 5, 4, 3, 2, 1 implies the same shape.
After all known points necessary to calculate the surface
area have been observed, [CALC] is displayed.
8. Press [CALC] to display the calculated area.
PT
: number of set points
SArea : slope area
HArea : horizontal area
9. Press [REC] in the screen of step 8 to record results and
return to <Menu>.
Press [OK] to return to <Menu> without recording results.
PROCEDURE Surface area calculation by reading in the points' coordinates
1. In the second OBS mode screen, press [MENU], then
select "Area calc.".
2. Enter the instrument station data.
3. Select "Area calculation" in <Area calculation>.
22. SURFACE AREA CALCULATION
LOAD
N
E
Z
ZA
HA-R
REC
Pt_01
Pt _ 01
Pt _ 02
Pt _ 03
Pt _ 04
Pt _ 05
PT
SArea
HArea
REC
100
OBS
12.345
137.186
0
1.234
9 0
0 1
2 5
1 0 9
3 2
0 0
MEAS
OK
OBS
CALC
OBS
5
468.064 m
0.0468 ha
431.055 m
0.0431 ha
OK
2
2
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