Solar dial for automatic switching of street lamps
Standard type solar dial as used for automatic switching of street-lamps at dusk and dawn, by Venner Time Switches Ltd., New Malden, Kingston-upon-Thames, London, England, 1870-1932.
- Measurements:
-
overall: 30 mm x 95 mm 68 mm, .15kg
- Materials:
- brass (copper, zinc alloy) and steel (metal)
- Object Number:
- 1932-474 Pt1
- type:
- dial
- Image ©
- The Board of Trustees of the Science Museum