About the Radium: if its ra-226 one also could wait about 1602 years while half of it decays away
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Don't want to speculate whats left of the deuce then.
I wouldn't worry about it too much if the intruments are intact and sealed, because Radium and its relatively "fast" decay products (Radon, Polonium, and pb-214) or isotopes are mostly primary alpha sources, which is a radiation that won't penetrate or exit the closed intrument body anyway.
If it is nevertheless a concern one could change the instruments and turn the old ones in as hazardous waste. I surely would do so if the instrument body is cracked or damaged (don't forget, Radon is a gas, living as an isotope for 3 or 4 days iirc, but I wouldn't want to breathe it in in unnatural quantities, risking that it turns to Polonium and finally the Lead isotope in my lung and stays there and starts a cancer problem).
Mark
BTW: happy new year altogether, I've been in vacation