It is more likely to be an electron vacuum tube X-ray generator for dental x-rays.
The isotope source is mainly used for industrial radiography of metal welding and casting.
Before using or opening these two machines, read all the security literature you can get.
In most countries, any type of use requires a proper radiological license and periodic (annual?). Medical examination. In most countries, the mere possession of radioactive isotopes requires some form of clearance.
If there is no incentive for the tube machine, there will be no great risk (some may have a vacuum of glass tube, some may have beryllium or its compound). If operated, but without proper shielding and/or safety interlocks and timers, they can also cause radiation hazards. Even with the right Settings, you should be wise to limit your exposure.
