caption: The image shows a black and white drawing of two machines, a stereoscope and a microscope, with text written on it. The stereoscope is a large, cylindrical device with a handle on the top and a lens at the bottom, while the microscope is a smaller, rectangular device with two arms extending from the top. Both machines have a metal frame and a control panel with various buttons and knobs. The text on the paper reads " stereoscope" in bold, white lettering.