Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 410
Rcrordiiii; IMlicrcntial rrc.s.,uie Uauge or Flow .tteter forWater. In this demonstration unit the Bristol Recording Dif-ferential Pressure Gauge has been applied for recordingthe flow of water with the Bristol Differential Tube. By means of the hand pumj) water can Ije circulatedthrough the pipe… … Indiciitint; ticviiU- rjr(,;;.(:, r aiid A::.<>niali< Hiirh Teni-Iternture foiitroller. Here is shown one of the new Bristol High Tempera-ture Regulators with electric gas valve applied to aminiature gas furnace. With this automatic electricalequipment the tem|)erature in a furnace is…
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