DOCTER DOCTER®unipoint 3-12x56 - Manual (Page 13)

Reserve battery chamber
The second lithium battery R2032 included in the scope of delivery is kept in a cap (5) of
the adjusting group cover. It is retained in this battery chamber by a strong magnet.
When opening the cap it can be loosened by pushing it on to the flat of the hand.
Mounting
All models are made of high tensile aircraft aluminium, the tube body is manufactured
with low weight and high precision as a monoblock structure.
Ring variant
The model without rail is particularly suitable for push-on, tilting or swivelling installation.
Internal rail
With proper installation of the DOCTER     unipoint rail model, the centrally arranged
patented mounting rail (6) (dimensionally and structurally the same as the Zeiss internal
rail) leaves no wishes unsatisfied as regards functionality and balance.
Change of enlargement
Depending on distance of shooting and the lighting conditions, the amount of
enlargement can easily be adjusted by turning the inner ocular knurl ring (Varioring) (7).
For better orientation, the most important enlargement values are engraved on the knurl
ring (7) whereby also any desired intermediate setting with the same picture quality,
sharpness and absolutely unchanged target point position can be steplessly set.
The Varioring in not divided linearly which achieves a better adaptation to the physiology
of the eye.
Setting the viewing sharpness
The viewing sharpness is adjusted by turning the outer ocular ring (8). A possible eye
error is compensated if, with relaxed seeing, the viewing sharpness is perceived.
An eye error compensation of ±2.5 dioptres can be undertaken.
In principle, the sharpness setting should be carried out at the highest enlargement as
thereby the sharpness of viewing can best be evaluated at the maximum resolution. A
later change of enlargement does not change the sharpness setting.