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Archivbilder der Woche KW19 December 30, 1966: London, England, United Kingdom: Seen making a sounding with only their sticks in London yesterday are (L to R) Leading Inspector, GEOFFREY SWINARTON, leading inspector, A. J. MARSHALL, and Foreman of Inspectors, H.J. HALLIDAY: These three men are inspectors in Londons Metropolitan Water Board. They are listening for leaks in the water pipes beneath the pavement in the Rosebery Avenue, Finsbury. It is a skill business you will observe listening for leaks. No electronic devices have been invented too surpass this very manual method. The instrument the inspectors use, technically known as a sounding stick, is simply a solid piece of ash wood with beech earpieces. It is the experienced ear that goes on the end of the stick - ZUMAk09_ 19661230_jtc_k09_584 Copyright: xKeystonexPressxAgencyx
