Farm Engines & How To Run Them, Reading 1
Boring Books for Bedtime Readings to Help You Sleep
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The Steam Gauge and Safety Valve
The steam gauge was invented in 1849 by Eugene Bourdon of France. He discovered that a flat tube bent in a simple curve held fast at one end would expand and contract if made of proper spring material. The free end operates a clockwork that moves the pointer. With all pressure off, the pointer will return to zero. Steam gauges frequently get out of order and should be tested occasionally.
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