This is a picture of Leeuwenhoek’s microscope. The lens was a simply glass bead embedded in a tiny hole on a metal plate. The sample is put on the tip of the pointed rod. Today, a student can make a glass bead using simple general chemistry glassware techniques. The chemist pulling horizontally on each end of a glass stirring rod held in a burner flame draws a fine strand of glass. After breaking in half, one strand is put back into the burner flame vertically, and a glass bead forms while melting. A replica of this antique microscope can be made using this glass bead. Simple technology, yet Leeuwenhoek managed to document some extraordinary findings with this microscope.