. Earth, sky, and sea . V/////////W/////777X 4 z^ A O '-A/W\VVW outside /nside I the cab\n ^^wyw Fig. 28. Pressure gauge for use in the shallows solution, however, is not suit- able in practice, for if the pilot, who has many things to think about, forgets this detail, the gauge explodes. Naturally the use of an automatic cock could have been envisaged, but it would be better to find a pressure gauge which, while still being fairly sensitive to low pressures, could without danger bear the highest also. Although it has not yet been designed in detail, I should here like to describe an idea for
. Earth, sky, and sea . V/////////W/////777X 4 z^ A O '-A/W\VVW outside /nside I the cab\n ^^wyw Fig. 28. Pressure gauge for use in the shallows solution, however, is not suit- able in practice, for if the pilot, who has many things to think about, forgets this detail, the gauge explodes. Naturally the use of an automatic cock could have been envisaged, but it would be better to find a pressure gauge which, while still being fairly sensitive to low pressures, could without danger bear the highest also. Although it has not yet been designed in detail, I should here like to describe an idea for an instrument which seems to me rather interesting. Fig. 28 gives the principle of it. It is a com- pressed-air gauge intended to be placed in the antechamber, therefore subjected to sea pressure. It is formed by a U-shaped tube in thin glass, of which the base contains mercury (Hg). One arm is open. The other [ 182]
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Keywords: ., book, bookcentury1900, bookpublishernewyorkoxforduniversitypress
