The BK Precision 470 CRT Tester Rejuvenator is an integral tool to have in your workshop, especially if you are an electronics technician or engineer. A vintage item, it is designed to test the performance of cathode ray tubes, such as oscilloscope tubes, and rejuvenate them. It is manufactured by B&K Precision, a reputable brand known for its quality test equipment that caters to the professionals in the electronic industry. With the BK Precision 470 CRT Tester, you can restore your vintage CRTs to their optimal performance and extend their lifespan. Unit is partially tested and powers on. Unable to test without vacuum tubes. Condition is nice and no noted issues. May not be complete. Manuals included, see photos. Item only as shown, no additional accessories.