This image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
License this image for commercial use at Science and Society Picture Library
Robertson electric metal filament lamp, marked '27', 200V, 16 c Science Museum Group © The Board of Trustees of the Science Museum
Robertson electric metal filament lamp, marked '27', 200V, 16 c.p., pipped, BC. Made in England c.1915.