Answer to Question #1344 Submitted to "Ask the Experts"

Q

I happened upon a Samson Nuclear-Chicago Survey Meter made for Carbide and Carbon in the 50s by Nuc Instrument and Chemical Corp. It has Model 2582 on the front and Model JS-301-1 and Serial A on the backplate. I'd like to figure out if this thing works. Any ideas how to begin? I am told that Samson and Nuc Instrument are both out of business.

A

I've used an old Nuclear-Chicago Survey Meter early in my career. Additionally, these old 1950s instruments often show up on online auction sites. Most likely it is a Geiger counter-type survey instrument, no doubt with old battery-style requirements (for example, 67½ or 22 volt). If there is an external probe, check the window. If it's broken, it might be a nice display item or paperweight. Next, open the battery compartment; if they haven't leaked, it may still work. You'll no doubt need some D cells, but again, the trick is to find the correct specialty batteries. Even if the batteries aren't present, the inside holders should have markings. A call to a local hobby shop or electronics shop may work. Alternately, an online search may locate what you need. Lastly, if you turn it on and hear clicks and see the needle on the meter move, that's background radiation. You may look for a small orange glazed (only) Fiesta^®ware plate or bowl for about $10 to $20 in an antique shop. It has uranium glaze, and the beta particles from the ²³⁸U decay products will give a respectable response. It emits mainly beta rays and is not a hazard if handled on occasion. Best of luck!


David J. Allard, CHP