John, I measured the threads to be metric at .7mm pitch. I believe it to be an M4 x .7 x 49mm though most likely a 50mm will work or even a 48mm (length).
> On Jun 10, 2017, at 3:02 PM, Chuck Harris <cfhar...@erols.com> wrote: > > HP has been metric for years. > > Dr. David Kirkby (Kirkby Microwave Ltd) wrote: >> I've done something rather stupid with my 3457A. I took it apart to replace >> the battery, and then seem to have mislaid the screws that hold the thing >> together. As far as I can see, there are 4 screws in the base. The problem >> is, I don't know what type they are. Could anyone with a 3457A tell me the >> type - a photo with dimensions on emailed to me would be great. I'm >> guessing these will be an American thread of some sort. I can get these in >> the UK, although not quite as readily as metric. But of course its >> difficult if you don't know what you want. >> >> FWIW, I decided not to change the battery. Having visited Keysight in >> February, their cal lab manager said if I asked for it, they would check >> the calibration of the instrument before replacing the battery, then >> replace the battery at zero cost*, then calibrate it. So I would get before >> and after data anyway. >> >> * This assumes the battery is not very expensive. If the battery was >> expensive, I'd have to pay for the battery. >> >> My 3457A has not seen a cal lab in a couple of decades, so I think it >> deserves a check over. >> >> Dave >> _______________________________________________ >> volt-nuts mailing list -- volt-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts >> and follow the instructions there. >> > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.