California Historical Society for reference use only Jfcme #1*30 1921 Me^srfuW.P.

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Roll of Membership LEONHARD, Frederick (1921), Sales Engr. and Mgr..

American Society of Heating and Ventilating Engineers Guide, 1924-25 required to raise 1 lb. of air 1 deg., is 0.2415.

American Society of Heating and Ventilating Engineers Guide, 1924-25 n - i vr rn nmm irt ni ionrlr-N American Society of Heating and Ventilating Engineers Guide, 1924-25 EQUALIZING RISER TEMPERATURE DROPS No matter how carefully riser or circuit sizes may be calculated, the limitations imposed by the necessity of using standard sizes of pipe and fittings will affect the results sought for in a heating system.

Grinnell Company, Incorporated Heating and Piping Systems GRINNELL COMPANY Heating, Industrial and Power Plant Piping, Fittings, Hangers, Valves, Pipe Bending, Welding, Piping Supplies, Etc.

American Society of Heating and Ventilating Engineers Guide, 1925-26 52 F ig . 16.