I actually just sold that meter, it had a chain drive and main cog was cracked where two screws held it on. I used a electronic tie and glue gun to make sure if it broke all the way it couldn't fall apart. A man in England bought it because he wanted one when they came out but couldn't afford it then. He loved it and said nice repair on the cog. Yes I told him a cog was cracked in two places. I use to repair TV's, but now just radios, although I have my late mothers TV in the garage maybe I will fix it. Thanks for all the welcomes, just now got a chance to replay, have a 3 and 4 year old girls here, they keep me busy.