An authoritative navigational resource for voyage planning and reference underway. Includes detailed sections on navigation, weather, safety, communications, etc. Six editions cover the UK, N. America, and the Caribbean.
Pocket-knife-sized instruments measure wind speeds, temperature, humidity, and barometric pressure. Other functions include chronograph, stopwatch, wind-chill calculator, tide predictor, and measurements over time.
Several models of barometer with pressure alarms
The chapters on weather elements, cyclones, observations and routing from the 1995 edition of The American Practical Navigator, originally published in 1802 and updated by NIMA. Chapters 35 - 38 on weather basics.
Sequential courses on the theory and practice of forecasting, from the basics of sun and wind to cyclones, thunderstorms, and tornadoes.