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Working Advice - Bosch DLE 40 Professional Originalbetriebsanleitung

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OBJ_BUCH-724-001.book Page 20 Tuesday, July 29, 2008 1:25 PM
20 | English
Subtracting Measured Values
Push the memory subtraction button 11 in order
to subtract the current measured value from the
memory value. As soon as a value has been sub-
tracted, "M" is indicated in the display and the
" – " behind it briefly flashes.
If a value is already stored in the memory, the
new measured value can be subtracted only
when the measures of unit correspond (see
"Storing/Adding Measured Values").
Displaying the Stored Value
Push the memory retrieve
button 2 in order to display
the value stored in the
memory. "M=" is indicated
in the display. When the
memory contents "M=" is
indicated in the display, it can be doubled by
pushing the memory add button 3 or set to zero
by pushing the memory subtract button 11.
Deleting the Memory
To delete the memory contents, first push the
memory retrieve button 2, so that "M=" is indi-
cated in the display. Then briefly press button
13; "M" is no longer indicated in the display.

Working Advice

General Information
The reception lens 19 and the laser beam outlet
18 must not be covered when taking a measure-
ment.
The measuring tool must not be moved while
taking a measurement (with the exception of
the continuous measurement function). There-
fore, place the measuring tool, as far as this is
possible, against or on the measuring points.
Measurement takes place at the centre of the
laser beam, even when target surfaces are sight-
ed at an incline.
2 609 140 582 | (29.7.08)
Influence Effects on the Measuring Range
The measuring range depends upon the light
conditions and the reflection properties of the
target surface. For improved visibility of the
laser beam when working outdoors and when
the sunlight is intense, use the laser viewing
glasses 21 (accessory) and the laser target plate
22 (accessory), or shade off the target surface.
Influence Effects on the Measuring Result
Due to physical effects, faulty measurements
cannot be excluded when measuring on differ-
ent surfaces. Included here are:
– Transparent surfaces (e.g., glass, water),
– Reflecting surfaces (e.g., polished metal,
glass),
– Porous surfaces (e.g. insulation materials),
– Structured surfaces (e.g., roughcast, natural
stone).
If required, use the laser target plate 22 (acces-
sory) on these surfaces.
Also, air layers with varying temperatures or
indirectly received reflections can affect the
measured value.
Sighting with the Alingment Aid (see figure E)
With the alignment aid 7, sighting over larger dis-
tances is a lot easier. For this, look alongside the
aligning aid on the top side of the measuring tool.
The laser beam runs parallel to this line of sight.
Working with the Tripod (see figure C)
The use of a tripod is particularly necessary for
larger distances. Position the measuring tool
with the 1/4" thread 14 onto the quick-change
plate of the tripod 20 or a commercially available
camera tripod. Tighten the measuring tool with
the locking screw of the quick-change plate.
When positioning the tripod, observe that the
measurement will take place beginning from the
rear or front edge of the measuring tool, de-
pending on the selected reference level.
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