Heating and ventilating buildings : a manual for heating engineers and architects . Fig. 149.—r -11 \ri dManometer Tubi Fig. 150.—Bourdon Gauge moves the hand an amount proportional to the pressure. Fig. 150 shows the interior of a pressure-gauge of this char- SETTINGS AND 185 acter, the dial being removed. In place of the tube a corrugateddiaphragm is sometimes employed. A section of such a gaugeis shown in Fig. 151. In the use of gauges of the character justdescribed it is necessary to protect them from extreme this purpose when they are connected to a steam-boiler a

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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910