Thread: 1.25" spacer/washer similar to parfocal rings
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Old 07-04-2021, 01:40 PM
Wilso
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Wilso is offline 		 
Join Date: Nov 2016
Location: Adelaide
Posts: 415
I have used a rubber o ring as a parfocal ring. They work quite well and come in different sizes/thicknesses as well.
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