San Francisco : Architect and Engineer, Inc · leaf 196
\/ESIX i^u^ CALCULATOR ilide-rule style, for quick computing of theirred WESIX Wiredheot SYSTEM for onylose. AvoilobI? to architects, engineers,intfactors ond dealers- WCSirt ELECTRIC liCATER CO.393 F;rs* ttrecf. Sen Francisco … IN THE NEWS NEW SHUT-OFF VALVE A new improved Warden auto-matic low pressure shut-off valveembodying the use of gravity-ac-tuated shut-off mechanism is an-nounced by the Security ValveCorpn of Los Angeles. jm ^®^ <fl i It automatically closes off gaslines when low pressures occur;for use on %…
Architecture · Building
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