This instrument was made and signed by the famous French scientific...
This binocular compound microscope is one of which it may be fairly...
This device is a precision optics gauge to measure lens radius...
A thread counter micrometer for Cotton, Linen, Silk and other textile...
A 8.5 cm (3.3 inches) new brass teleidoscope. A teleidoscope has...
A Henry Crouch Brass Microscope, English, mid 19th century. Signed...
A 19th Century English Brass Camera Lucida. The camera lucida is...
A unique 'Leitz' Camera Lucida. The original black carrying case...
An Early 19th Century Martin Type Drum Microscope by Crichton,...