https://s3.amazonaws.com/omeka-net/36717/archive/files/77f259e031dbcc1e690511a67829c771.JPG?AWSAccessKeyId=AKIAI3ATG3OSQLO5HGKA&Expires=1551713315&Signature=TZ%2BE9bmlZYeWsVXn8cK%2FexrIytE%3D

Media

Part of "Cary-Gould type" Pocket Microscope