Ok, seriously: I have one I got around 1970, been gently treated, and it still will inflate a tubular. They frame mount - the Campagnolo pump head has little feet that fit to BB lug in front of the seat tube. Newer ones had a handle shape that latches into the seat lug, and older ones used an "umbrella bracket" that clamped to the seat tube. The length was chosen to fit the seat tube.

They're very lightweight and teh outer shafts can be fragile. The air seal is a greased leather disk, which needs from time to time refreshed grease. Like I said, they will inflate a tubular. Rather amazing for a design that's more than 40 years old!