Hutton, Frederick Remsen, 1853- [from old catalog] · New York, J. Wiley & sons; [etc., etc.] · leaf 616
f a needle over a dial.Such spring may either be a flat disk or diagram, Fig. 472,or it may be a hollow brass or steel tube which is bent intoan arc of a circle, and the sides permitted to come togetherby this bending, so that the section of the tube is that of avery much flattened oval. When… … Fig. 472. straighten out by internal pressure, can be indicated by amultiplying gearing which shall cause an indicating-needle totraverse an arc. Fig. 473 shows the ordinary Bourdon gaugewith flattened tube availing of this principle. Pressures belowthat of the atmosphere can be observed by similar…
Mechanical engineering · Steam power plants
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