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Eustace Ernest Wigzell
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Individual
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Individual
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Publication of GB190502409ApublicationCriticalpatent/GB190502409A/en
2409. Wigzell, E. E. Feb. 7. Sounding - apparatus.- Relates to apparatus of the type in which the depth is determined from the quantity of water forced into and trapped by a tube, against the pressure of a given quantity of air. Thus, water is forced up the inlet tube B to overflow into the outer tube F. To colour the entrapped water and t h u s facilitate reading against a scale, the outside of a tube B is covered with some soluble colouring-matter ; or a solution may be introduced into the tube F. The tube B is fixed in a cap C which may be secured either by sealing-wax or a rubber band.