36.4mm threaded 1.25" visual back
thingiverse
1.25" visual back with a 36.4mm male thread. This will fit various vintage telescope focuser drawtubes. It's a replacement for the "standard Vixen adapter". It is set up for an M5 thumb screw and and M5 nut. Just drop the nut into the hole on the inside. If it's too loose add a drop of super glue.
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