Binocular microscope with base and prism housing by C.D. Ahrens and Stephenson body tube by John Browning

1851-1900

Pair of spectacles for assessing squint

Erecting monocular microscope

1860-1900

High power binocular body tube

1851-1900

Binocuular body tube

1850-1900

Two prisms for binocular microscopes

1851-1880