Thread: GS dob optics
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Old 10-08-2005, 08:51 AM
slice of heaven
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slice of heaven is offline 		 
Join Date: Mar 2005
Location: S.A.
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BC
The centre screw only positions the secondary.
The 3 outside screws are for adjusting the angle of the secondary.They should be firm against the secondary holder.
The 4 screws act together to hold position.
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