Sounding Lead, Adolphe Pécoul, 1855 sounding lead An elongated quadruing, after the invention of A. Pécoul. This large buoy, decorated as a low -pure, has a wheel and recovery spring on the long point, which prevents the rope from walking back. The rope must be provided with a lead, and as soon as the weight of the rope is because the lead touches the bottom, the recovery spring clamps the rope. Marseille brass (alloy). lead (metal). wood (plant material). rope Paris

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