The first practical microscope with binocular viewing by John Leonard Riddell

- Image ID: KWEW7R
The first practical microscope with binocular viewing by John Leonard Riddell
Historical Images Archive / Alamy Stock Photo
Image ID: KWEW7R
Illustration from The Microscope and its revelations seventh edition published in 1891. Fig 71 shows the apparatus & Fig 72 shows the arrangement of prisms to achieve the effect.