San Francisco : Architect and Engineer, Inc · leaf 80
the modern fuel PACIFIC COAST GAS ASSOCIATION, INC. { A non-profit seriice organization of which your Gas Company is a member) 447 SUTTER STREET, SAN FRANCISCO fi\ aii tufi^ o^ ^(iiM^ LflRCE^SfnflLL OLD or NEW- … -fCd Duo-Stat Zone Control Heat conservation in existing buildings —or new ones —by means of JOHNSON DUO-STATS. The various zonesof the heating system controlled in accordance with theproper relationship between outdoor and radiator tem-peratures. Also, switch and clock control of heating risers.…
Architecture · Building
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