Nice! I collect radioactive sources like that! Some will pay good money for these things! I wouldn't use _μSv/h,_ unless that Geiger counter is calibrated to radium-226. If it only uses dose units, than oh well. These are calibrated with cesium-137, so measuring in a dose unit on a different radioisotope can be wildly inaccurate. Always use _CPM_ (counts per minute) if it has that option.
Nice! I collect radioactive sources like that! Some will pay good money for these things! I wouldn't use _μSv/h,_ unless that Geiger counter is calibrated to radium-226. If it only uses dose units, than oh well. These are calibrated with cesium-137, so measuring in a dose unit on a different radioisotope can be wildly inaccurate. Always use _CPM_ (counts per minute) if it has that option.