Bosch GML 50 Professional User Manual download pdf (Page 15)

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Bosch Power Tools 2 609 140 773 | (19.10.11)

Values above 999999 m

cannot be indicated; “ERROR” ap-

pears on the display. Divide the volume to be measured into

individual measurements; their values can then be calculated

separately and then summarized.

Continuous Measurement (Tracking) (see figure E)

For continuous measurements, the measuring tool can be

moved relative to the target, whereby the measuring value is

updated approx. every 0.5 seconds. In this manner, as an ex-

ample, you can move a certain distance away from a wall,

while the actual distance can always be read.

For continuous measurements, press button 9 until the indi-

cator for continuous measurement appears on the display.

To start the continuous measurement, press the measuring

button 2.

The current measured value is displayed

in the result line b.

Pressing the measuring button 2 ends the

continuous measurement. The last meas-

ured value is displayed in the result line b.

Pressing the measuring button 2 again re-

starts a continuous measuring run.

Continuous measurement automatically switches off after

5 min. The last measured value remains indicated in the result

line b.

Indirect height measurement / Simple Pythagoras Meas-

urement (see figure F)

The indirect height measurement is used to measure distanc-

es that cannot be measured directly because an obstacle

would obstruct the laser beam or no target surface is available

as a reflector. Correct results are achieved only when the right

angles required for the respective measurement are exactly

adhered to (Pythagorean Theorem).

Pay attention that the reference plane of the measurement

(e.g. the rear edge of the measuring tool) remains exactly at

the same location for all individual measurements within a

measuring sequence.

The laser beam remains switched on between the individual

measurements.

Press button 3 until the indication for simple Pythagoras

measurement appears on the display.

Measure distances “1” and “2” in this sequence as for a

length measurement. Pay attention that a right angle exists

between distance “1” and the sought distance “X”.

Upon completion of the last measure-

ment, the result for the sought distance

“X” is displayed in the result line b. The in-

dividual measured values are displayed in

the measured-value lines a.

Deleting Measured Values

Briefly pressing button 4 deletes the last individual measuring

value determined in all measuring functions. Briefly pressing

the button repeatedly deletes the individual measured values

in reverse order.

Adding Measured Values

To add measuring values, firstly carry out a measurement.

Then press the plus button 8. For confirmation, “+” appears

on the display.

To add volumes or areas/surfaces, press the plus button 8 af-

ter the first completed measuring process. For confirmation,

“+” appears on the display left of the volume/area symbol.

Then carry out a second measurement.

To call up the sum of both measurements,

press the plus button 8 again. The calcula-

tion is indicated in the measured-value

lines a, and the sum in the result line b.

After calculation of the sum, further

measured values can be added to this re-

sult when pressing the plus button 8 prior to each measure-

ment.

Notes on the addition:

– Mixed length, area/surface and volume values cannot be

added together. For example, when a length and area val-

ue are added, “ERROR” briefly appears on the display af-

ter pressing the plus button 8. Afterwards, the measuring

tool switches back to the last active measuring mode.

– For each calculation, the result of one measurement is

added (e.g. the volume value); for continuous measure-

ments, this would be the displayed measured value in re-

sult line b. The addition of individual measured values from

the measured-value lines a is not possible.

Subtracting Measured Values

To subtract measuring values, press mi-

nus button 5; For confirmation, “–” is in-

dicated on the display. The further proce-

dure is analog to “Adding Measured

Values”.

Working Advice

General Information

The reception lens 12 and the laser beam outlet 11 must not

be covered when taking a measurement.

The measuring tool must not be moved while taking a meas-

urement (with the exception of the continuous measurement

function). Therefore, place the measuring tool, as far as this is

possible, against or on a firm stop or supporting surface.

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 19 (ac-

cessory) and the laser target plate 20 (accessory), or shade

off the target surface.

Influence Effects on the Measuring Result

Due to physical effects, faulty measurements cannot be ex-

cluded when measuring on different surfaces. Included here

are:

– Transparent surfaces (e.g., glass, water),

– Reflecting surfaces (e.g., polished metal, glass),

– Porous surfaces (e.g. insulation materials),

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