a brace type trepanning saw by Mathieu, French, 19th century, in unplated carbon steel, brass and nickel silver, 31cm long; a French Archemedes drill type saw by Collin in nickel plated steel with carbon steel saw blade, cutting a circular hole 8mm diameter, 35.3cm long; a crank operated saw, American, 20th century, by EB Meyrowitz, the saw advancing from its sheath as it cuts a hole c. 3mm diameter; a Gigli chain saw, blued steel chain with two nickel silver handles, unsigned, early 20th century (4)