per part of the lowerbottle on a water gage. The pressure head in the air at the2-inch tee was indicated in feet of water by the differenceof elevation between che water surfaces in the two bottles. A%-inch hole in the side of the upper bottle insured the pres-sure in this bottle being equal to… … Thermometer We O-^-- fa f=>—h Fi-o^r A Fig. 13.—Drum and Orifice for Air Measurement. different experiments varied, the height of one or both of thebottles was changed so as to prevent the surface of the waterdisappearing in the tube or overflowing through the vent hole.Bottles were used instead…
Pumping machinery · Compressed air
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