American Society of Heating and Ventilating Engineers Guide, 1928 Fig. 9.

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American Society of Heating and Ventilating Engineers Guide, 1929 Table 12-B.

American Society of Heating and Ventilating Engineers Guide, 1929 "Four sets of sash were fitted with cracks of Ms, 34> Ms and J4 in.

American Society of Heating and Ventilating Engineers Guide, 1929 .Table 5.

American Society of Heating and Ventilating-Engineers Guide, 1929 the starting device and means for adjusting speed are usually incorporated in one controller.

American Society of Heating and Ventilating Engineers Guide, 1929 In garages and testing rooms the air is frequently contaminated with gasoline vapors and unsaturated gases, resulting from incomplete com bustion, which cause headaches and feelings of lassitude.

American Society of Heating and Ventilating Engineers Guide, 1929 at the same time, the velocity in the main might easily be lowered to the point where it would not be sufficient to carry the material from the machines still in operation, and thus result in clogging the pipes.

American Society of Heating and Ventilating Engineers Guide, 1929 1902 President_____ _________ _ 1st Vice-Presidents _A.

Healers, Unit 2441-45 CHARLOTTE STREET KANSAS CITY,MO.

Air System Equipment Sheet Metal and Tubular Products Bethlehem Steel Company General Offices: Bethlehem, Pa.

Healing Systems RdutiE, Con?

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Die-casting^- aro used fbrs many purposes today-- * frequOttiy/,^|Sla;ces ,, you" never thought of.