Specifically the orientation of such switches. I cannot recall any item of Marconi test equipment I've ever seen, manufactured from the 1950s until the mid 1980s (both dates approx.), in which the mains on/off toggle switch has
not been fitted with the toggle orientated for 'down = on', 'up = off'. They have always been the other way round - which, of course, is the USA-style. So do I deduce from that that such equipment was either designed in the USA or was manufactured with the USA as the primary market for such products?
I don't
need to know: just curious.
(Aside: I appreciate the logic of the USA 'method'. If something falls under the attraction of gravity and hits the toggle when the item switched on, that item will then be switched off.)
Al.