The AIR-EST-AID Device Manual

The AIR-EST-AID Device Manual published by Manor Press, Long Island, NY, No Pub Date. Edition Not Stated. Paperback. Size 12mo (up to 7-1/2'' tall). Condition: Good. Front & back cover loose, tear at upper spine corner. Some ink notes in content, overall in vg condition. 23 Pgs. An estimating device for The Air Conditioning of Dwellings. An instrument which reduces the technical mathematics of air conditioning to simple arithmetic. Edited by Howard B. Ackerman. Description text copyright 2002 BooksForComfort. Item ID 5710.