West Australian (Perth, WA : 1879 - 1954), Saturday 11 April 1931, page 15


YESTERDAY'S. BAROMETER READING.

.The diagram show* the .barometer, reading at rertn at noon yesterday.' The corresponding reading at any locality can be obtained by subtracting from the Perth readine. the amount

gjvra in the following table opposite the altitude of the locality: —

Height above sea level. Subtraction. 100ft. . . . O.lOOin. 200ft. . . . 0.212in. 300ft. ... O.S21in. 400ft. . . . 0.426in. 500ft. . . . 0.534in. 600ft. . . '. O.O42in. 700ft. .\ . 0.743in. .800ft. . . ?. 0.861in. 000ft. -. . . 0.96»in. 1,000ft. . . . l.OSlin.

For example, when the Perth reading is 29.967in.. the cocrecronding reading in a-'town 500ft. above sea level would be 29.433.