5 • Compulevel
TM
Measurement system
The Measurement Module
The hand-held measurement module, linked to the base unit by its polymer
cord, is the COMPULEVEL
TM
component you use to take the actual
elevation measurements.
When taking measurements, the bottom and back of the measurement
module are the
only
sides that may be used interchangeably for
measurements. Hold the module level at the point where you want to
measure. Measure near the centre of either the back or the bottom.
Other sides may be used throughout any series of measurements, but
measure only with the surface you used to zero COMPULEVEL
TM
– Do not
change one surface to another for measuring without re-zeroing the unit.
Never
invert the measurement module without compensation (see
illustration) unless it was inverted when zeroed. It will not show the
correct elevation.
Example:
To measure the distance between the floor and ceiling in the
illustration on the opposite page: first, zero the measurement module on
its back or bottom on the floor. Then place its top, bottom, or back against
the ceiling to take a reading. To get the correct measurement, you then
manually add the height or thickness of the measurement module to the
display reading, or do so automatically using the ADDER function
described later.
MM on
BOTTO
M
R
COM
PUL
EVE
L
COM
PUL
EVE
L
CAL
REC
MARK
HOLD
RES
SCAL
E
ZERO
ON
OFF
MM on
BACK
CL
Display reading is equivalent for measurements taken
from back or bottom.
To avoid adding values, use the same side for start
and finish, without rotating or inverting.
H
= Display
Measurement module
rotated
H
H
H
H
RIGHT
WRONG
H
= Display
H
= Display
+
3.5” or 3.75” with boot
For Measurement module inverted
H
= Display
+
2.0” or 2.25” with boot
OR
OR
OR
OR
OR
Typical Use
Must add value or use ADDER function (see page 15)
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