This vintage volt meter has 2 scales 1 = 0-6 volts and 2 = 0-120 volts. It measures 51mm in diameter. There is a cut cable at the top of the meter which I believe measures 1 scale & at the base of the meter are 2 probes which I believe measures the other scale. It appears to be in working order but I have no means of testing, so therefore is being sold as untested. Free postage to the UK only.