For ex-British Rail rolling stock, your best bet to getting a specific answer would be a mate with access to the PADS database.
Unfortunately, the very few mates / contacts I have on the railways are all drivers & guards... I know no one on the engineering side of things...
Are you querying thread type and size?
Sort of... just out of curiosity really... I've worked in the bus industry for years & seen all sorts of brass fittings but never like this...
Incidentally, I don't suppose anyone would know where I could get any other gauges at a "reasonable" price??? I've picked 2 gages up for around £30 a piece but have seen some on ebay upwards of £80... Its not a price I (a) have the money for, or (b) am unwilling to pay when ultimately I'm intending on stripping them down to convert them to electronic control to try & get them to work with train simulator...
It's irrelevant really if they work or not, just as long as they've in a reasonable condition (ie: gauge face is readable, needles not missing & the glass is intact)...
Thanks again...
Eric
Sorry!!!
I forgot to insert the photo...!!!
Eric