Double Hacksaw
Stephen Shepherd in the State of Deseret
>As I mentioned on the chat last night, this is a copy of a double hacksaw that appeared in L'Art de Tournier by Charles Plummier published in 1792.
One end is threaded and the other is a loose socket, by turning the center strut the saw is tightened or loosened. One blade is coarse and the other is fine.
The ruler is 6".
Stephen