https://s3.amazonaws.com/omeka-net/36717/archive/files/56acd8eef305b5cdec555c640c1a0314.JPG?AWSAccessKeyId=AKIAI3ATG3OSQLO5HGKA&Expires=1551713315&Signature=tqDCTRDk1y3iTfctFYFyweoPnMA%3D

Media

Part of "Cary-Gould type" Pocket Microscope