Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 408
Kecording Pressure and Vacuum Gauges. These three demonstration models of the Bristol Re-cording Pressure Gauges are e.xhibited in slteleton formto show the simple construction and principle of opera-tion of the moving elements. Both helical and diaphragmtypes of pressure tubes are shown with pen… … Long-IHstiincc Electric Triinsniitter and Recorder. This exhi!)it shows one of tlie new Long-Distance Elec-trical Bristol Recording Gauges with which the recordmay l)e transmitted over Ions; distances. The electricaltransmitting and receiving instruments employ the prin-ciple of the induction…
Architecture · Building · Construction industry · Engineering
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