lucimeter
illuminometer
heliograph
nightscope
photometer
panel light
Fizeau-Foucault apparatus
photometrician
absorptiometer
ometer
photometrograph
light microscope
chromascope
magnascope
scotoscope
microscope
magnifying glass
metra
astrometer
retinoscope
chromometer
dynameter
sensitometer
fluorometer
auxometer
light meter
scientific instrument
metrochrome
exposure meter
optophone
spectroscope
focimeter
streak camera
pseudoscope
goniophotometer
guidelight
booklight
horometer
leukometer
saccadometer
spectropolarimeter
velometer
transmissometer
chronoscope
optical instrument
orthoscope
haemadromograph
interference microscope
carcel
lighting fixture