Centering the lens
Press to select the type of mid-distance lens.
The centering target is displayed:
Enter the half PD and the frame height.
The target moves.
Lower the tube.
Insert the posiblock and its pad in the centering device.
Raise the tube back into centering position.
Position the lens on the tube, with the convex side on the tube.
Slowly move the lens until manufacturer markings are:
• Perfectly centered in the centering cross
• Parallel to the horizontal lines
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