Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 661
living rooms or for business, sedentary or active; in thestore the bookkeeper needs much more heat than the salesman. On an average, 100 to 150 cubic feet of room space can be heated from 0°to 70° by 1 square foot of radiating surface—say 3 of V pipe. This covers anaverage glass exposure which may… … 1 J ■ H^i 1 ^1 r 1 —1
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
