[quote author=Zerogee link=topic=281391.msg361324#msg361324 date=1442750595]
PS: taking the thought a little further, are European lever types basically the same as British ones - would the same generic design do for both?
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The UK style (as shown below at the former Derby Road Signalbox in Ipswich) can certainly be found anywhere with our involvement in railway construction - ie `The Empire`, plus the likes of Argentina and similar installations were in use extensively in the USA.
Even then, there are some variations, as a ground frame I built from a variety of spare odds and ends (including 1/72 scale tank running gear parts...)
is based on a Liverpool built example I photographed in Argentina a few years back - note the addition of concrete tensioning weights between double levers.
The ones I have encountered in Europe, particularly the German style (and by default parts of Poland etc) are completely different in appearance and operation. I`ve got a picture of the inside of Wolsztyn box somewhere (which was Wollstein when it was built), but the computer is on a go slow at the moment....