Measurement Functions - Bosch PMB 300 L Operating Instructions Manual

pmb300l_bu_1609929J04_t.fm Seite 4 Montag, 1. August 2005 4:36 16
To switch off the instrument, press the on/off button 11 again.
After approx. 5 min without performing a measurement, the instrument
switches off automatically to save the batteries.
Changing the Measuring Unit
(only for Article Number 3 603 K07 0..)
After switching on the measuring instrument, the measured values are
shown in the unit that was selected the last time the measuring instrument
was used.
By repeated pressing of the button for changing the measuring unit 4 with
a pointed object, a change can be made at any time between the meas-
uring units of centimetres and feet/inches.
Laser Viewing Glasses (Accessory)
The laser viewing glasses filter out the ambient light. As a result, the red
light of the laser appears brighter to the eye.
The laser viewing glasses (accessory) are not protective glasses
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against laser radiation. Do not use them as protective glasses against
strong sun light or in traffic.

Measurement Functions

Length Measurements (see Fig.
The instrument measures the distance d between the lower case edge
(reference point 16) and the outer notch on the marking opening (refer-
ence point 17). The measured value that appears in the display 5 corre-
sponds to the scale value on the measuring tape 10.
Horizontal/Vertical Alignment (see Fig.
Switch on the laser beam as necessary. For the horizontal alignment of
the laser beam, use the bubble level 7, for the vertical alignment, the bub-
ble level 6. For alignment to existing markings, place the instrument on
the marking with the notch under the laser outlet (reference point 18).
The horizontal or the vertical path of the laser beam can be determined
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exclusively with the bubble levels 6 or 7. The placing of the case
against horizontal or vertical surfaces does not ensure parallelism of
the laser beam to these reference lines.
Measuring Horizontal/Vertical Distances (see Fig.
For exact measuring of horizontal/vertical distances, switch on the laser
beam and pull out the measuring tape 10. Level the laser beam with the
aid of the bubble levels 6 or 7. Then position the measuring tap so that
the laser beam strikes the inner notch (reference point 19) on the marking
opening 9.
Marking the Measured Point
Measured lengths can be marked through the marking opening 9. Avail-
able as marking aids are:
– Marking pin/stamp: The marking pin/stamp 3 can be inserted option-
ally with the point or the stamp downward in the marking knob 1. To
prevent the stamp ink from drying, insert the marking stamp end into
the marking knob 1 after finishing the measurement.
– Making pencil: Remove the marking knob 1 together with the marking
pin/stamp and insert a marking pencil 2 (e.g., a commercially availa-
ble lead pencil) into the marking opening.
After a completed measurement, place a mark on the surface by pressure
on the selected making aid.
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