Diameter in Inches.

Cubic Contents.

Diameter in Inches.

Cubic Contents.

1 174 1% 1%4

21 214 22 22%, 23 23%, 24 25 26

27

or or ONA HA A CO CO CO CONNNN

374 3% 324

.0055 .0085 .0123 .0168 .0218 .0276 .0341 .0413 .0491 .0576 .0668 .0767 .0873 .0985 .1105 .1231 .1364 .2503 .1650 .1803 .1963 .2130 .2305 .2485 .2673 .2868 .3068 .3275 .3490 .3713 .3940

494 5 574 574 524 6 674 6%, 624 7 774 72 724 8 874 8%

824 9 92 9% 934 10 1074 10% 1024 11 11/4 11/2 1194 12 1272 13 1372 14 14% 15 15% 16 16 17 17% 18 18% 19 19%, 20 20%

.4175 .4418 .4668 .4923 .5185 .5455 .5730 .6013 .6303 .6600 .6903 .7213 .7530 .7854 .8523 .9218 .9940 1.069 1.147 1.227 1.310 1.396 1.485 1.576 1.670 1.767 1.867 1.969 2.074 2.182 2.292

28 29 30 31 32 33 34 35 36 37 38 39 40

2.405 2.521 2.640 2.761 2.885 3.012 3.142 3.409 3.687 3.976 4.276 4.587 4.909 5.241 5.585 5.940 6.305 6.681 7.069 7.468 7.886 8.296 8.728 9.168 9.620 10.084 10.560 11.044 11.540 12.048 12.566

41

42 43 44 45 46 47 48

FLOW OF AIR THROUGH AN ORIFICE IN CUBIC FEET OF FREE AIR PER MINUTE.

Flowing from a Round Hole in Reciever into the Atmosphere.-Continued.