Letheby's Photometer
- Made:
- Westminster
Dr. Letheby's photometer, consisting of a Bunsen photometer-head and two movable carriages. Made by William Sugg, Gas Engineer, Westminster, London, S.W.
Dr. Letheby's photometer, consisting of a Bunsen photometer-head and two movable carriages. Made by William Sugg, Gas Engineer, Westminster, London, S.W.