I need 2 of the rings that go on the back of an ST40 instrument to hold it in place, any idea of someone that may have some kicking around they will sell me, dont fancy the Raymarine spare price.
It's likely that they are the same as for ST60 units, IIRC these are M5 thread. A couple of ss hex. nuts and suitable washers would do the job but you would not be able to tighten with fingers.
I say again, I have what you need cant open pm due to popup blocker email please