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THIS IS A BELL AND HOWELL MODEL 34 OSCILLOSCOPE. WE DON'T KNOW ANYTHING ABOUT THIS ITEM. WE DID PLUG IT IN AND GREEN LINES APPEAR WHEN KNOB IS TURNED. THERE IS A GREEN DOT. IT STATES ON THE ITEM : BELL AND HOWELL SCHOOLS THE SIZE IS APPROX. : 20 POUNDS 12 x 16 x 8 |
