Screwbarrel Microscope, by Edmund Culpeper, London?, c. 1715

A white ivory compound tube screws onto a brass objective with an biconvex lens eyepiece. There is also an ivory handle with a full talc chamber in the ball end. There is a decorated opaque specimen holder with a black/white disc that unscrews to reveal a pin. There are also six objectives mounted in brass, one with an ivory cover. The box is covered with black fishskin and lined with green velvet.