Abney's colour photometer with rotating sector apparatus
Abney's colour photometer with rotating sector apparatus, telescope with adjustable slit, focusing screen and lens, two pillars for prisms, by Adam Hilger, London, 1888 [Mounted on a new base in 1986 for display in the Optics Gallery.]
- Object Number:
- 1888-176 Pt1
- type:
- photometer and prism - optical