Barometer Handbook 118 Compass can also be read

Compass can also be read from above like a standard compass

A collaboration by numerous authors

Replacement pockets available here

together with the light characteristics on the back of the card

Barometer Handbook 118 Compass can also be readWith 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