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KF5JRV > TECH 27.07.16 13:36l 24 Lines 941 Bytes #-3556 (0) @ WW
BID : 6727_KF5JRV
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Subj: Pocket Weather Forecasters
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>From kf5jrv%kf5jrv.#nwar.ar.usa.na@i0ojj.ampr.org Wed Jul 27 13:30:11 2016
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>From: kf5jrv@kf5jrv.#nwar.ar.usa.na
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Pocket weather forecasters
The scientific instrument firm Negretti and Zambra produced a weather
forecaster intended to be used with a barometer and weather vein. Two dials
were rotated according to barometric reading of air pressure and the direction
of the wind. The corresponding chart on the reverse indicated likely changes
in weather for the next 12 hours.
In 1938, the firm D. & K. Bartlett produced a weather forecaster based on the
type of cloud and the direction of the wind. The central dial rotated to
reveal a weather prediction.
73, Scott kf5jrv
KF5JRV @ KF5JRV.#NWAR.AR.USA.NA
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