Levenhuk Ermenrich PL30 Optical Level Bedienungsanleitung Seite 6

Place the device at a distance of 1m from rod A. Measure the height of the rod A (value a2 in Fig. 10). Calculate the following equation:
b2' = a2 – d. Then, measure the height of rod B (b2). If the deviation between b2' and b2 is over 3mm, the crosshairs should be calibrated.
For example:
a2 = 1.724m
d = 0.248
so b2' is: a2 – d = 1.476
Take off the eyepiece cover (12). Turn the adjusting screw with the pin (Fig. 11) until the values b2' and b2 are the same. Put on the eyepiece
cover again.
Specifications
Magnification
Working distance
Height accuracy for individual measurement
Standard deviation per 1km double leveling
Objective aperture
Image
Field of view
Close focus
Compensator range
Compensator setting accuracy
Multiplication factor
Additive constant
Horizontal circle graduation
Accuracy of the bubble level
Tripod adapter
Dimensions
Weight
30 m
a1
A
a1-b1=d
Figure 9
a2
A
a2-d=b2'
1 m
Figure 10
Figure 11
b1
d
B
b2
d
B
32x
120m
1.6mm/30m
1mm
36mm
erect
1°30'
0.3m
±15'
±0.3"
100
0
1° or 1 gon
8'/2mm
M16 or 5/8"
195x135x140mm/7.6x5.3x5.5in
1.4kg/2.2lb
6