Overview: The NeoLucida is a drawing aid that allows you to trace what you see. It’s a modern reinterpretation of the camera lucida, an indispensable drawing tool popular in the days before photography.
"We use a silvered prism, optimized for optical clarity, carefully encased in a custom anodized aluminum mount. The prism is supported by a highly adjustable gooseneck arm and a sturdy metal clamp. We even use a 1/4"-20 threaded bolt as the connection between the gooseneck arm and the prism holder--so your NeoLucida arm can easily double as a standard camera mount." - Website