General lighting service or G.L.S. Lamps with coiled-coil or single-coil filaments
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BuyLicense this image for commercial use at Science and Society Picture Library
LicenseGeneral lighting service or G.L.S
Science Museum Group
© The Board of Trustees of the Science Museum
General lighting service or G.L.S
Science Museum Group
© The Board of Trustees of the Science Museum
General lighting service or G.L.S. Lamps with coiled-coil or single-coil filaments, made by the million mainly for domestic use. The commonest types are the 40, 60, 100 and 150 watt pearl lamps but they are also made with clear bulbs and in other sizes.
