The mastery of water. By courtesy of The Budenberg Gatige^Co., Ltd. A BOURDON PRESSURE GAUGE. All boilers—^and, in fact, aU vessels which are to containliquids and gases under pressure—^are fitted with
DigitaltMuseum
Aneroid Barometer, Metal barometer consisting of a round dial mounted on a tap The dial has a hand and a
Schäffer & Budenberg Messing Manometer Raddampfer Stadt Luzern am Vierwaldstättersee, Schweiz Stockfotografie - Alamy