I was given a "Hobbies" treadle fret saw for Christmas in about 1970. Money was short and mine was a "Gem" model which cost about £7.00 IIRC. The "A1" model, which is the one in the museum collection was about £11.00. The Gem was mostly made from pressed steel sheet, but the A1 had a cast iron construction.
They were listed in the Hobbies catalogue as " fret saws" I don't recall "scroll saw" being a term in those days. I used it to make lots of small practical things but never got into the elaborate decorative fretwork which had been very popular a few years earlier.
The saw really came into its own when, with together 3 friends, I built 2 two-seater canoes to a published design. The design called for frames cut from plywood held together with longitudinal strips of parana pine and covered with "canvas", which was really a kind of plastic covered fabric. The fabric had to be ordered from "CB Cross " at the bottom of Deansgate in Manchester. The frames gave the canoe its shape and were cut to paper patterns from an 8 foot by 4 foot sheet of marine ply, which was much bigger than the work the saw was designed for.
To cut this sheet into frames, we had one child ( we were all aged about 10) on his knees under the saw, working the treadle with his hands, while the other 3 balanced the ply on the saw table all trying to keep the saw on the cutting line. It was hard work and we broke a lot of blades!, but the canoes were finished and we had lots of fun with them.
Rod