Hi
Happy New Year to one and all.
This my first post and some information about myself.
Draughtsman, Petro chem ,Mechanical engineering Apprenticeship.Retired

I have a project with a MK111 Compass with a view to bring back to good condition.
I have looked through all previous post and they are very good but if possible I would like some more information .I have enclosed a Photograph of my Compass with a few problem areas.(I hope)
Attachment 68405
1.These are the Radium 226, can these be removed and replaced with a safer item, I have read one
One article stated that for education purposes to obtain Radium 226 they take a old clock face , Compass needles etc, and dissolve the Radium with Acetone into a suitable container, are the components still Radio Active even though the Radium has been removed.
When you refill the Bowl with new fluid I have read that Rubber gloves and a respirator are to be used, would the Respirator be a Military Surplus Gas mask or what is used in the industry.My Brothers have taught to be cautious some I am looking for a Safe project.
2.The lid flops up and down, the pin is tapered and has worn over the years, can this be replaced and which side do you knock out the pin.( are the pins available).
3.The index ring clamp screw spins round, I am not sure if the screw is stripped or the thread in the case is stripped can these be repaired?.
4.To seal in the glass into the Bowl it appears that putty/mastic has been used,I believe there should be a ‘O’ ring to seal off the damping fluid, can I find a ‘O’ and replace the putt/mastic ?.
5.The area around the clamping ring and the 8 screws have been painted white, is this another type of finish used?
6.On one side of the outer case one of the screws that hold in the Bowl is made of steel no good, are new brass screws available, I presume that the thread would be B.A.
Is the bowl safe to take out of the casing so that I can paint the casing and the lid, I have painted brass before but the paint always comes off, do I require Etch primer or Lacquer finish.
On the base of the Compass there is a worn rubber ring in black, I have seen red rings can they be obtained or make your own?.

This quite a list and I thank you for you time.
Regards
Michael
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