Pantograph: Early Copy Machines
A pantograph, first invented in the early 1600s, was used to make exact copies before there were any Xerox machines around. It’s a simple mechanical device made up of four bars linked together in a parallelogram shape.
Here’s how it works: by simply tracing an object with the pointer, the pantograph makes a copy larger or smaller depending on which point you attach your pen and pointer.
Some pantographs were adjustable – meaning that they could change their pivot points to adjust the size of the copies.