Zeiss Dimension Manuel D'utilisation page 24

Adjusting the azimuthal position
US
ZEISS Dimension lenses have a ring for adjusting the azimuthal
position. Thus, it is possible to adjust the lens to ensure optimal
readability of the scales regardless of the installation position.
Loosen the three grub screws of the the ring (4) with the included
hex key and turn the front part of the lens into the optimal
position. To fasten the ring again, tighten the three grub screws
finger-tight with the hex key.
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