Hi,
I came across the following advert:
http://www.irjohnston.com/HP_spectrophotometer.html
for a HP 8451A Spectrophotometer which includes the rare 98155A keyboard.
This machine is based on the HP-85A / 85B (or both!) and the ad has some
nice photos of the complete set up, including the keyboard which HP-9915A
owners seem to be desperate to get their hands on. This looks like an
expensive way of buying a keyboard though....
BTW the photos are dated October 2003 so this may have sold by now.
Perhaps suppliers of 8451As might have a spare keyboard from a dead unit
knocking around, I would not like to ask all the 100's of suppliers of
surplus lab equipment though!
Regards,
John