What is "copyscope"

A Copyscope is type of refracting telescope that can be made by hand rather than bought in which the objective lens comes from a old photocopy machines hence the origin of the telescopes name. The lenses usually come from defective or very old photocopiers, allowing for the objective to be obtained for free or a very minuscule cost They are usually small aperture lenses, ranging from 50mm to 60mm, and are also of short focal length, making good use as a portable, wide-field telescope, but unsuitable for higher magnifications.