"Zero point" Quotes from Famous Books
 ... above, carefully noted and preserved. Where, however, this is impracticable, the comparison should be effected by means either of some other standard previously so compared, or of an intermediate portable barometer, the zero point of which has been well determined. Suspend the portable barometer as near as convenient to the ship's barometer, and after at least an hour's quiet exposure, take as many readings of both instruments as may be necessary to reduce the probable error of the mean of the differences ...
— The Hurricane Guide - Being An Attempt To Connect The Rotary Gale Or Revolving - Storm With Atmospheric Waves. • William Radcliff Birt |
