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GREAT BRITAIN 

For consumer contact, please visit www.clasohlson.co.uk 

and click on customer service.

Digital Spirit Level

Art. No  40-8180  Model  DL-04 (D600XP) 

Please read the entire instruction manual before use and save it for future 
reference. We reserve the right for any errors in text or images and for making any 
necessary technical changes to this document. If you should have any questions 
concerning technical problems please contact our Customer Services. 

Safety

•  Always keep the spirit level out of the reach of children and animals.
•  Remove exhausted batteries.
•  Do not incinerate exhausted batteries.
•  Do not short-circuit the batteries.
•  Do not mix old and new batteries.
•  Make sure that the batteries are inserted as indicated by the markings in 

the battery compartment.

Care and maintenance

The spirit level is a precision instrument and must be handled with care.
Do not expose the spirit level to dust and moisture. The spirit level must not 
be subjected to blows, vibration and extreme temperatures. If the spirit level 
is to be unused for a long time, remove the batteries.

Disposal

Follow local ordinances when disposing of this product. If you are unsure  
about how to dispose of this product contact local council.

Description

•  600 mm digital spirit level.
•  Sturdy aluminium frame.
•  Two bubble vials for level and plumb, high precision, deviation only ± 0.5 mm/m.
•  Digital slope measurement, accuracy ± 0.2°. Result can be displayed in °, 

%, mm/m or in/ft.

•  V-shaped groove along the entire underside allows precision measurement 

on pipes as well. 

If you choose the units in/ft, the display 
shows H = 6 

7

/

8

” 

(H=L·tan 

α

, L = 3.28 ft, 

α

 = 30°). If you choose slope in %, 

the display shows H = 57.72 (H=L·tan 

α

L = 100, 

α

 = 30°).

 

Buttons

1. [CAL] Press to enter calibration mode.
2. [UNIT] ] Press to toggle between different display units: ° (degrees),  

% (slope), mm/m and in/ft (rising - falling).

3. [Hold] Press to save the currently displayed data. When the hold function 

has been activated, the display shows 

H”. Press [Hold] again to deac-

tivate the function.

4. [REF] Press to save a reference point. When the reference point has been 

saved, the display shows 

S”. Press [REF] again to deactivate it.

5. [Audio] Switch buzzer on/off. When the buzzer is on, it sounds at 0°, 45° 

and 90° (± 0.5°).

6. [ ] Press to switch on the spirit level. Hold down for about three seconds 

to switch off the spirit level.

Display icons

7. Shows graphically whether the level is sloping up or down or is level.
8. Shows that the buzzer is active 
9. H shows that the hold function has been activated (display data frozen)
10. S shows that a reference point has been saved
11. Shows the slope 
12. Battery status

Examples of different displays for the same slope. Press [UNIT] to change 
the display units.

Measured slope is 

displayed in  
degrees: 30°

Measured slope 

is displayed as 

a percentage: 
57,72 %

Measured slope is 

displayed in  

millimetres/metre:  
577 mm/m

Measured slope 

is displayed in 

inches per foot:  

7

/

8

 in/ft

 

If the angle is greater than 45° but less 
than 90° (H=L/tan 

α

).

NOTE:

 The display switches off automatically when the batteries are low. 

To save the batteries there is an automatic switch-off function which switches 
off the spirit level if it has been motionless for three minutes.

Use

1. Press [ ]; the display comes on.
2.  Place the spirit level on a level surface. The slope is displayed directly as 0–90°. 

3. The angle is displayed in both directions. 

Measurement from a reference surface

During measurement you can save a measured 
value as 0° so that it can be used as a reference 
for the next measurement. 

Example: You want to use the slope (A) as  
a reference for the next measurement (B).

1.  Place the spirit level on the reference surface (A).
2. Press [REF]. The display shows 

0”.

3. Place the spirit level on the new measurement 

surface (B).

4. Read off the angle between (A) and (B) on 

the display.

Calibrating the spirit level

1. Place the spirit level on a flat surface with a slope of less than 5°.  

If the slope is greater, the display shows “Err”.

2. Hold down [CAL] for about five seconds to start calibration.
3. When the display shows “CAL 1”, release the button and wait for  

the actual slope to be displayed.

4. Turn the spirit level through 180° and put it back on the same surface.
5. Hold down [CAL] for about five seconds and release the button when 

“CAL 2” appears.

6. “CAL 2” flashes three times and the reading is displayed again.

Technical specification

Length

 

600 mm

Accuracy, digital slope gauge

 

± 0.2°

Accuracy of bubble vials

 

± 0.5 mm/m

Measuring range

 

0 to 90°

Units of measurement

 

°, %, mm/m, in/ft

Environment for use

 

0 °C to 40 °C

1

3

9

8

10

12

5

2

7

11

4

6

H=L·tan 

α

H=L/tan 

α

45°<

α

< 90°

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