This category has only the following subcategory.
- ► Surveying instruments (47 P)
Pages in category "Optical instruments"
The following 14 pages are in this category, out of 14 total.
- Optical instrument (physics)
- Coherence scanning interferometry (physics)
- Disappearing-filament pyrometer (physics)
- Glossmeter (physics)
- Hilger & Watts (company)
- Interferometry (astronomy)
- Mirror galvanometer (physics)
- N-slit interferometer (physics)
- Reynolds and Branson (biography)
- Stauroscope (physics)
- Upside down goggles (physics)
- W. Watson and Son (engineering)