1 cubic foot, at 14.7 lbs. per square inch, or 1 atmosphere, equals .080728 lb. at 32° F.; 1.29 ounce at 32° F.; 565.1 grains at 32° F.; .076097 lb. at 62° F.; 1.217 ounce at 62° F.; 532.7 grains at 62° F.

1 liter, under 1 atmosphere, equals 1.293 grams at 32° F.; 19.955 grains at 32° F.

1 lb. of air at 62° F. equals 13.141 cubic feet.

The weights of equal volumes of mercury, water, and air, at 62° F. under 1 atmosphere, are as 11,140.56, 819.4, and 1.

1 atmosphere of pressure equals 14.7 lbs. per square inch; 2,116.4 lbs. per square foot; 1.0335 kilograms per square centimeter; 29.922 inches of mercury at 32° F.; 76 centimeters of mercury at 32° F.; 30 inches of mercury at 62° F.; 33.947 feet of water at 62° F.; 10.347 meters of water at 62° F.

1 lb. per square inch equals 2.035 inches of mercury at 32° F.; 51.7 millimeters of mercury at 32° F.; 2.04 inches of mercury at 62° F.; 2.31 feet of water at 62° F.; 27.72 inches of water at 62° F.

1 ounce per square inch equals 1.732 inches of water at 62° F.

1 lb. per square foot equals .1925 inch of water at 62° F.; .01417 inch of mercury at 62o F.