Thread: GSO 10" f4 OTA outside diameter?
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Old 01-05-2013, 08:10 PM
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koputai (Jason)
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Join Date: Nov 2007
Location: Sydney, Australia
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Hi Graham,

I don't have an OTA, but have the GSO rings for same here. The ID of the rings is 302-303mm.

Cheers,
Jason.
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