About this 3D model

A 19th Century US Patent Model from the Rothschild Patent Museum. This is a 3D scan of a working miniature replica. https://www.google.com/patents/US62349?dq=US+62349&hl=en&sa=X&ei=A0O0U4n-NI6yyASh7oDoDw&ved=0CBwQ6AEwAA