Barometer Handbook Furneaux One of a series of

One of a series of inexpensive

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Australia - South Coast - Victoria - Approaches to Portland 1:100 000

Direct reading against a variation scale

Barometer Handbook Furneaux One of a series ofWith the exception of trained meteorological crews, barometers in the past were used at sea primarily to learn if the pressure was going up or down, and whether it was doing this rapidly or slowly. From this we made an educated guess of a likely consequence, usually in conjunction with other observations. Outside of professional marine use, little effort was made to know the true pressure for several reasons. We did not know what to do with it if we