Applications Zoom20/30/35 Pro | 55
11.6.5 Extension
Access Select Line-Ex from the COGO menu.
Extension Use the Extension subapplication to calculate the extended point from a known base line.
11.7 Area & Volume
Description Area is an application used to compute online areas to a maximum of 50 points connected by straights.
The target points have to be measured, selected from memory, or entered via the keypad in a clockwise
direction. The calculated area is projected onto the horizontal plane (2D) or projected onto the sloped
reference plane defined by three points (3D). Furthermore a volume with constant height can be calculated
in relation to the area (2D/3D).
Access 1) Select Apps from the MAIN MENU.
2) Select Area from the Apps menu.
3) Complete application pre-settings. Refer to "10 Applications - Getting Started".
AREA & VOLUME The graphic always shows the area projected onto the horizontal plane.
The 2D area is calculated and displayed once three points have been measured or selected. The 3D area
is calculated once the sloped reference plane is defined by three points.
Known
P1 Baseline start point
P3 Baseline end point
dL1,dL2 Distance
Unknown
P2, P4 Extended COGO points
P1
P2
P3
P4
d L1
d L2
P0 Instrument station
P1 Start point
P2-4 Target points
a Perimeter, polygonal length from start point to
the current measured point.
b Calculated area always closed to the start
point P1, projected onto the horizontal plane.
1PtBACK
To undo measurement or selection of the
previous point.
CALC
To display and record additional results (perim-
eter, volume).
VOLUME
To calculate a volume with constant height. The
heights have to be entered or measured.
Def. 3D
To define the sloped reference plane by
selecting or measuring three points.
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