Bosch GLM 30 Operating/Safety Instructions Manual page 14

Indirect Measurement (see figure C)
For Indirect measurements, repeatedly press button 4 until the
indicator for Indirect measurement
Make sure that there is a right angle between the sought distance
(height) and the horizontal distance (depth)! Then measure
the depth and diagonal one after the other as with a length
measurement. The first measured value will be shown at the top
of the display. The laser beam remains switched on between the
two measurements.
Clearing Measured Values
Pressing the Clear/ On/Off button 5 will delete the last measured
value in all measuring functions. Repeatedly pressing the Clear/
On/Off button 5 will delete the measured values in reverse order.
Adding/subtracting measured values in real time and length
measurement modes (see figure B)
After the third measurement has been completed,
the volume will be automatically calculated and
displayed. The end result will be shown at the
bottom of the display, while the current measured
value will be shown above it.
After the second measurement has been
completed, the height will be automatically
calculated and displayed. The end result will be
shown at the bottom of the display, while the
current measured value will be shown above it.
To measure, press the measuring button 2.
The measured value will be shown at the bottom
of the display.
Press button 6 to add measured values or press
button 3 to subtract measured values. "+" or "–"
will appear in the middle of the display. Take
another measurement. The current measured
value will be shown at the bottom of the display,
and the previous measured value will be shown
above it.
appears on the display 1.
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