No, they are all 'standard' (except for the mounting) SPST switches; most (e.g. the address/data bits) are normal two-position, although some (LOAD ADDR, DEPOSIT, EXAM, START and CONTINUE, IIRC) are momentary-contact. The 'toggle' (the plastic part that fits over the switch) has an off-center shaft that goes around the switch's metal actuating shaft, so that the toggle can be level when the switch is in the 'un-set' position. Some of the switches are installed 'the other way around', and they depress instead of lift (typically the address-data switches lift, and the function ones depress, although there are exceptions - e.g. DEPOSIT is a lift). If they're not actually still availble - see below. That is _almost_ the exact switch (I just about had a heart attack when I saw them, and started to order some until I realized they weren't quite it); it has the right mounting mechanicals (note the two triangular side plates with the holes through the tips - the toggle have pins which go into the holes, and the toggle pivots on them). Alas, it's DPDT, not SPST. And it's momentary contact (although each PDP-11 panel does contain some momentary-contact switches). But if C+K is still making _these_, they should have no problems making the SPST version - if, in fact, they are not still in production. I tried looking through the catalog at that site, to see if I could find the SPST version, but no luck. (Although maybe I'm just a klutz about that site - it wasn't easy for me to use.) Maybe your parts-search-fu is better than mine? Noel