[volt-nuts] Screws in bottom of 3457A

[Chuck Harris]

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 at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
> and follow the instructions there.
>