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Legacy Member
No 32 MK3 scope question
Hi All,
I apologize in advance for the basic ignorance of my question.
Which is -
Should the elevation and windage drums move reasonably freely by rotating the knurled outer ring, or should the locking nuts in the centre of each drum be loosed first?
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03-29-2019 02:04 AM
# ADS
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Legacy Member
They should move with distinct clicks but freely.
Something is wrong, and I expect Pete will be along soon to give you the possibilities.
Don't force them!
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Roy has it in one. Loosen the locking nuts (the lead screw locking nuts incidentally) at your peril - accuracy speaking........! There is a torque reading to turn the drums but it gets complicated after that
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Legacy Member
Thanks guys.... I'm not going to force anything.
How about a few drops of Kroil ? Or is that asking for trouble?
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Legacy Member

Originally Posted by
Florey55
Thanks guys.... I'm not going to force anything.
How about a few drops of Kroil ? Or is that asking for trouble?
Whats the history on the scope?
Has it sat for a long, long time?
If so, the grease has dried and needs proper servicing.
I had this on mine.
For me, someone was kind enough to leave the windage drum at full deflection before putting away for 40 years....
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Advisory Panel

Originally Posted by
Florey55
Thanks guys.... I'm not going to force anything.
How about a few drops of Kroil ? Or is that asking for trouble?
Do not put oil on an optical device.
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Just speak to Brian at BDL
Ltd in SC
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Some of the Indian scopes I bought two years ago are so gummed up with rust, 'Dulux' gloss black paint & general shXt that I have to soak them in brake fluid for a fortnight to stand any chance of getting them apart.
But in general, I agree; be very careful with oil & organic solvents in the vicinity of optical equipment!
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