Optical instrumentW
Optical instrument
Coherence scanning interferometryW
Coherence scanning interferometry
Disappearing-filament pyrometerW
Disappearing-filament pyrometer
GlossmeterW
Glossmeter
InterferometryW
Interferometry
Mirror galvanometerW
Mirror galvanometer
Post InstrumentW
Post Instrument
Reynolds and BransonW
Reynolds and Branson
Upside down gogglesW
Upside down goggles
W. Watson and SonW
W. Watson and Son