Stabila OLS 26, Руководство по эксплуатации, Страница: 7 / 9

Measuring angles
2. Align the level with point A.
3. Set the horizontal circle to “0“.
4. Align the level with point B.
5. Read off the horizontal angle between
point A and point B from the horizontal circle
Check the reticle
1. Set up the instrument and level it
between 2 levelling rods
(approximately 30m from each).
2. Align the instrument with measuring
point A and read off the figure A1 on
the measuring point.
∆h1 = A1-B1 Difference in height between the measuring points:
3. Align the instrument with measuring
point B and read off the figure B1 on
the measuring point.
A1
A
B
∆h1
B1
2,218 m
Example:
1,950 m
Example: ∆h1 = 2,218 m - 1,950 m = 0,268 m
Checking the calibration
The OLS 26 level is designed for use on construction sites and was perfectly
adjusted when it left our factory. As with any precision instrument, however,
its calibration must be regularly checked. The unit should be checked before
starting any new tasks, particularly when the unit has been exposed to strong
vibrations. After an impact, the unit should be checked throughout its whole
self-levelling range.
1. Use the plumb-line to position the
level exactly over the angular point.
A B
Example: 80°
A B