Took a chance on E-bay. Seller looked like estate sale items. Anyway, it’s was untested. No way to test item. I have 18.00 into it total. The SWR reads accurately, but have to adjust all the way up to reach the set point. The watt meter barely moves. I am sure this has seen better days maybe 40 years ago. Pretty much clean expect for the crack in the meter plastic. I opened it up and sprayed with CRC contact cleaned. Not any better. Can older watt meters be repaired at all?