Glass Plate Negatives Series 2 - 1909 - 1959

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Diagram of lose head in fire mains

Diagram of metropolitan_water_board area

Diagram of relative coal consumption of types of engines

Diagram of sand washing plant in site

Diagram of standard valve and hydrant box pattern No.2B light

Diagram of standard valve on hydrant box pattern No.1 and No.1A heavy

Diagram of standard valve on hydrant box pattern No.1B light

Diagram of supply per head per day

Diagram of Thames flow April/December 1934

Diagram of Thames flow April/December 1934 without line 170 etc.

Diagram of the boards distribution mains

Diagram of total flow over Feilde's Weir and waste water abstracted from Lea 1919, 1933 part 1

Diagram of total flow over Feilde's Weir and waste water abstracted from Lea 1919, 1933 part 2

Diagram of total flow over Feilde's Weir and water abstracted from Lea 1919, 1933 part 3

Diagram of total flow over Feilde's Weir and water abstracted from Lea 1919, 1933 part 4

Diagram of wash out hydrant

Diagram section of typical reservoir bank

Diagram showing mains from Walton and Molesey to Island Barn and Ditton Reservoirs

Diagram showing Thames flow in 1921/1922

Diagram, "Cornish" boiler from "Steam Boilers" by Fowler

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