Here is a graphic I did for a railway museum information kiosk. It shows how a tamper works.
http://www.tomfassett.com/railroad/g...s/tamper2.html
Warning to those of you on dial-up--this is a
big file (nearly half a meg). It was intended to sit on a local computer that was running the kiosk so size did not matter (then...
)
Tom F
PS: I notice that a "gremlin" ghost frame has snuck into the image. I'll have to dig the original files out and fix it.