Bosch GOL Professional 20 D User Manual download pdf (Page 9)

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Bosch Power Tools 1 619 929 L41 | (18.6.12)

Operation

f Check the levelling and indication accuracy of the

measuring tool each time before using and after longer

transport of the measuring tool.

f Protect the measuring tool against moisture and direct

sun light.

f Do not subject the measuring tool to extreme tempera-

tures or variations in temperature. As an example, do

not leave it in vehicles for long time. In case of large varia-

tions in temperature, allow the measuring tool to adjust to

the ambient temperature before putting it into operation.

In case of extreme temperatures or variations in tempera-

ture, the accuracy of the measuring tool can be impaired.

f Avoid any impact to or dropping of the measuring tool.

After severe exterior effects to the measuring tool, it is rec-

ommended to carry out an accuracy check (see “Accuracy

Check of the Measuring Tool”, page 10) each time before

continuing to work.

f Place the measuring tool in the provided case when

transporting it over larger distances (e.g. in the car).

Ensure that the measuring tool is correctly placed in

the transport case. When placing the measuring tool in

the case, the compensator is locked; otherwise, it could be

damaged in case of intense movement.

Setting Up/Aligning the Measuring Tool

Mounting on the Tripod

Set up the tripod stable and safe against tipping over or slip-

ping off. Place the measuring tool via the tripod mount 13 on-

to the male thread of the tripod and screw the measuring tool

tight with the locking screw of the tripod.

Roughly level the tripod.

Over short distances, the measuring tool can be carried

mounted on the tripod. To ensure that the measuring tool is

not damaged during this, the tripod must be held vertically

during transport, and should not be carried lengthwise over

the shoulder.

Aligning the Measuring Tool

Align the measuring tool with the levelling screws 12 so that

the air bubble is positioned in the centre of the circular bubble

vial 7.

Turn the first two levelling screws A and B to move the air bub-

ble so that it is centred between the two levelling screws.

Then turn the third levelling screw C until the air bubble is po-

sitioned in the centre of the circular bubble vial.

Any remaining deviation of the measuring tool to the horizon-

tal plane following the balancing of the circular bubble vial is

compensated by means of the compensator.

While working, regularly check (e.g. by viewing through the

bubble vial mirror 3) whether the air bubble is still in the cen-

tre of the circular bubble vial.

Centring the Measuring Tool over a Point on the Ground

If required, centre the measuring tool over a point on the

ground. For this, hang the plumb-bob 20 onto the locking

screw of the tripod. Align the measuring tool above the point

on the ground either by moving the measuring tool on the tri-

pod or by adjusting the tripod.

Focusing the Telescope

Remove the lens cap from the objective lens 1.

Direct the telescope against a bright object or

hold a white sheet of paper in front of the ob-

jective lens 1. Turn the eyepiece 6 until the

crosshair appears sharp and deep black.

Telescope

–Image

– Magnification

– Field of view

– Clear objective

aperture

– Minimum measur-

ing distance

–Stadia ratio

– Stadia addition

erect

20x

1°30´

36 mm

0.3 m

100

erect

20x

1°30´

36 mm

0.3 m

100

erect

26x

1°30´

36 mm

0.3 m

100

erect

26x

1°30´

36 mm

0.3 m

100

erect

32x

1°30´

36 mm

0.3 m

100

erect

32x

1°30´

36 mm

0.3 m

100

Horizontal circle

graduation

1° 1gon 1° 1gon 1° 1gon

Tripod mount

5/8" 5/8" 5/8" 5/8" 5/8" 5/8"

Weight according to

EPTA-Procedure

01/2003

1.7 kg 1.7 kg 1.7 kg 1.7 kg 1.7 kg 1.7 kg

Degree of protection

IP 54 (dust and splash water protected)

Automatic level GOL20D GOL20G GOL26D GOL26G GOL 32 D GOL 32 G

The measuring tool can be clearly identified with the serial number 15 on the type plate.

2.1.

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Bosch GOL Professional 20 D User Manual Page 9

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