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1. Level the OLS 26.
2. Rotate the level through 180°.
3. Use the adjusting screws (9) to reduce 

the extent to which the bubble has 

moved outside the central ring by 50%. 

Then level the instrument and check again.

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Technical data 

Telescope magnification: 

26 x

Minimum focussing distance: 

ca. 1 m

Diameter of field of vision at 100m: 

2,1 m

Objective lens aperture: 

38 mm

Accuracy* 

Compensator accuracy: 

0,5“

Vertical accuracy in an individual measurement:  1mm / 10m

Standard deviation: 

< 2mm/km

Circular vial: 

8‘/2mm

Distance measurement   Multiplication constant: 

100

Addition constant: 

0

Horizontal circle increments:  

Operating temperature range:  

-20°C  ... + 40°C

Storage temperature range:  

-30°C  ... + 55°C

Protection class:  

 

IP 54

* When operated within specified temperature range

Subject to technical modifications.

Guarantee terms and conditions

In addition to the statutory rights to which the purchaser is entitled and which are 

not limited by this guarantee, STABILA guarantees the instrument against defects and 

the absence of the warranted characteristics resulting from material or manufacturing 

defects for a period 24 months from the date of purchase. This guarantee is valid 

worldwide.

 

STABILA has the right to decide at its own discretion whether the defects 

will be rectified by being repaired or whether the instrument will be replaced. STABILA 

accepts no further liability. Defects caused by improper handling (e.g. damage caused 

by the effects of powerful electric currents, operating the instrument with the incorrect 

voltage / type of current, use of unsuitable power sources) as well as modifications to 

the instrument undertaken by the purchaser or third parties invalidate the guarantee. 

No liability is accepted for normal wear and tear and minor defects which do not detract 

from the function of the instrument. Please send your claims under the guarantee 

along with the completed guarantee certificate to the guarantor (See last page).

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