Howdy, I was hoping you keyswitch brains could help me out. I have a vintage Intel SDK-85 microprocessor trainer. Two of the switches are bad. I've been trying to figure out who made them. 1977 vintage... about the time I wirewrapped my first computer (A RCA COSMAC CDP1801 - not CDP1802). Back in the day, the big keyswitch mfgs were cherry, keytronic. Maybe some grayhill and ITW. C&K and Also were big, too. I can provide internal/external photos. Non-sculpted keycaps are changable. 0.625" square. Inside there is a truncated conical spring-4.5 turns, and a phos-bronze cantilever beam that makes contact on one corner. I'd really like to find replacements, but if I can't, I'll hide a Omron B3F style switch inside. I appreciate the help.
I buried a photo in one of my ebay items... sorry, not to saavy on photo hosts:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110883361981#ht_500wt_1413
