Sheldon 10-inch L and XL (and many variants) later-type model, most on an underdrive stand but sometimes found as a bench-mounted type with a rear-mounted countershaft and the word "Sheldon" in large letters on the right-hand face of the headstock belt-drive cover. V-belt transmission a screwcutting gearbox with a single selector lever on the front face as sold from the late 19