Use Alvin's Pantograph with inclined or horizontal boards for tracing or dotting. It features die-sunk graduations with holes drilled for accuracy, and adjustable nylon ratio thumb screws for smooth movement.
It's made of seasoned hardwood bars, nickeled lead holder attachment and table clamps, and a metal tracer point. Includes accessories and instructions. 21" (53 cm) long.
® Alvin is a registered trademark.