New Series 80 Tube Rings

Unlike BORG rings – 7083, these rings have 1/4″-20 threaded holes at both side, which make guide scope setup at the top  easier even without any extra blocks. This rigid-made rings are highly recommended for astronomical application. It’s available now.

7083’s one side has just a plain hole which requires the threaded hole on the mounting plate. That created the setup restriction.

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~ by tedishikawa on February 1, 2012.

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