Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 247
d temperaturein the room with which it is connected. Large dampers which are to be operated pneumatically, shouldbe made up in sections or louvres. Dampers constructed in thismanner are handled much more easily than when made in a singlepiece. It often happens, in large plants, that there are… … u a ^ ISHH M •-] *—< > a -J! OD84 P to 11 ■7-O i _!■ u:u w ^1-1ou O MbB 13 «oo KO U u u Q Uiff m o u o Q 4) op.0,O ao ■—IP4 CO
Architecture · Building · Carpentry
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