About this 3D model

A pantograph is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical movements in a second pen - wiki this device is a pantograph for a dremel or another rotary tool.you can change between two scale settings; 1:2 & 1:3. see it in action!https://youtu.be/b9IEHV3V03Mhttps://youtu.be/DcVJ6e0UoJI