Two concise questions on these old HP 46021A terminal keyboards.
![Image](http://www.electromyne.com/images/large/132088a.jpg)
Does anyone who's used one of these boards know:
- What sort of switch do these use? I've heard both linear and slider over dome, but can't confirm either.
- Are the keycaps double-shot, dye-subbed, or pad printed? I can't find photographic evidence of wear on any of the ones I've seen online but I can't bring myself to believe these are double-shot.