- Brass Telescope, c. 1850...
- English Brass Telescope, c. 1870...
- Camera Lucida with Copper Plate, c. 1900...
- Camera Lucida or "Chambre Claire Universelle"...
- Carl Zeiss Research Microscope, 1911...
- Carl Zeiss Research Microscope, 1909...
- 4 German Microscopes...
- Leitz Brass Microscope, 1884...
- Ernst Leitz Student Microscope, 1927...
- Ernst Leitz Brass Microscope, c. 1913...
- Apollo Telescope with Eyepiece Revolver, c. 1...