Public domain photos

The image shows a drawing of a machine with a clock on top of it, which appears to be a mechanism used to measure the speed of a person. The paper has words and numbers written on it, likely describing the various components of the machine.

The image shows a drawing of a machine with a clock on top of it, which appears to be a mechanism used to measure the speed of a person. The paper has words and numbers written on it, likely describing the various components of the machine.Open in library