Collection

William H Darker

occupation:
Optical instrument seller,
Optical lapidarist,
Optician
Nationality:
English; British
born in:
England, United Kingdom

Traded at 9 Paradise St., Lambeth, London (1846-51)

Related Objects

Optical Extinction Pyrometer (Temperature Indicator), 1875-1900 (pyrometer (optical); thermometer)

Polar clock (clock)

Wheatstone polar clock for telling the time from the angle of polarisation of light in the sky (polar clock)

Case for optical wedge pyrometer (case - container)

Optical wedge pyrometer (pyrometer)