caption: The image shows a black and white drawing of a machine with a number of wires attached to it. At the bottom of the image, there is some text which appears to be a telegraph key. The machine is composed of a metal frame with a handle on the top and a few wires connected to it, and the wires are arranged in a circular pattern around the base of the machine. The text is written in a bold font and is likely a description of the device.