. Experiments upon the discharge of water through small fire hose and nozzles. 7. Tester. The first gauge was Graduated to read pressures up to 75 sq. in. This gauge and its connections are shown in Pig. o and willbe referred to hereafter as 2auge G-l. The connections are ordi-nary 1/4-in. pipe fittings consisting of two nipples (a,a), a tee (b),a drain cock (c), and a cut-off valve (d). The second gauge was grad-uated to read pressures up to 100 lb. per sq. in. This 2auge will bereferred to hereafter as aauge G-5. The connections -were the same asfor gauge 8-1. The average press
. Experiments upon the discharge of water through small fire hose and nozzles. 7. Tester. The first gauge was Graduated to read pressures up to 75 sq. in. This gauge and its connections are shown in Pig. o and willbe referred to hereafter as 2auge G-l. The connections are ordi-nary 1/4-in. pipe fittings consisting of two nipples (a,a), a tee (b),a drain cock (c), and a cut-off valve (d). The second gauge was grad-uated to read pressures up to 100 lb. per sq. in. This 2auge will bereferred to hereafter as aauge G-5. The connections -were the same asfor gauge 8-1. The average pressure at a section of the stream was obtainedby means of piezometer couplings. A sketch of one of these couplings isshown in Fi^. 6. The pressure of the stream is transmitted to the pres-sure chamber (0) through four holes A, B, C, D, eaually spacedaround the circumference. A 1/4-in. nipple connected the pressure cham-ber to a small rubber tube leading to the pressure 2auge. A hcod, which is shown in Fig. 7, was set up 6-ft. from thenozzle to deflect the stream into
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