Hi,
I'm wish to import a lionel CDV-700 from the united states into Australia. This would be no problem except that the geiger counter has a check source on the side containing a radioactive material. My country has strict importation rules involving radioactive materials, and I need to know what isotopes/material and the weight of it is.
I've done some research and it seems it's either depleted uranium or radium. Does anyone know some more info about the check source?