SHELDON L and XL Twin-tumbler Gearbox Lathe: Data Pack
SHELDON 10-inch L and XL later-type 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 TWO SELECTOR LEVERS on the front face of the screenwriting gearbox as sold from the late 1940