Thread: Edge HD 8" Bob's Knobs collimation thumb skews
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Old 31-07-2022, 01:19 PM
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Tinderboxsky (Steve)
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Tinderboxsky is offline 		 
Join Date: Feb 2012
Location: Kingston TAS
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Telescopes Astronomy in SA advised in a recent newsletter that they had a wide range of Bob’s Knobs.
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