... 3.measure the ages of bone 4.Power supply:AC: 220V, 50Hz Features: The unit is shock-proof, ray-proof, single-focus ... and self-rectified X-ray unit. It applies to medical fluoroscopy and radiogrphy on mouth, carity ... 3mAFor radiography: 75kVp 10mA 6sec, (interval time 3 minutes)Power supply: AC: 220V, 50Hz,1kVACurrent: for fluoroscopy 2A (uncontinuous) for radiography ...