San Francisco : Architect and Engineer, Inc · leaf 383
Here the Board recog-nizes the fact that differentials arethe cumulative result of years of his-torical development in the buildingindustry. They may properly be saidto represent allowances for, (I) diff-erences in regularity of employment,(2) differences in the degree of skilland training… … Automatic Gas Reg-ulating Valves Gas Burners Gas BurningEquipment Vacuum PumpGovernors Vacuum RegulatingValves Continuous FlowSteamTraps Thermostats Reducing Valves Boiler Feed-WaterRegulators dOil Oil Pumping SetsOil ValvesOil StrainersSteam Oil StrainersDuplex Oil PumpsRotary Oil PumpsBoiler Feed…
Architecture · Building
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