Here is an independent confirmation the foot pedal saw was certainly used in Boulle period from Pierre Ramond latest book on Boulle.
Here are couple page of that book on the subject with rough translations
“In André-Charles Boulle’s workshop the horizontal chevalet (scroll saw) is the most used. The marquetry packs built with wood, turtleshell, horn, and metals, each layer 1 to 2 mm (1/24 to 1/12 of an inch) thick, are heavy and of large dimensions. They are therefore hard to maintain on a vertical clamp (donkey)”