Optical Extinction Pyrometer (Temperature Indicator), 1875-1900
Optical wedge pyrometer, temperature indicator, by William H. Darker (junior), Paradise Street, Lambeth, London, 1846-1851
- Measurements:
-
overall: 17 mm x 154 mm x 50 mm, , .335kg
- Materials:
- brass (copper, zinc alloy) , silver (metal) and glass
- Object Number:
- 1955-117 Pt1
- type:
- pyrometer (optical) and thermometer
- Image ©
- The Board of Trustees of the Science Museum
