Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 143
ourtesy of Mr.Hopwood. of the Patent Office Library, several old prints are here reproduced showing that its use in the streets oi I in connection with oil lamps goes rightback to the eighteenth century ; the levelat which these lamps were suspended wasnecessarily low a fact illustrated bv… … Fig. 10. Central Suspension of high-pressuregas lamp in the City of London area.
Lighting
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