42 mm Tube diameter 53 mm Tube diameter
b. Blocking
Prerequisite
• The lens must be centered
• Use the posiblock adapted to the shape, indicated at the bottom right of the screen: or .
Place the posiblock on the pad and press firmly, with the self-adhesive face upwards and tabs towards
the left.
Remove the film from the self-adhesive face.
Lower the tube.
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