bucket rain gauge-A rain gauge where the precipitation collected by the receiver empties into one side of a chamber which is partioned transversely at its center and is balanced bistably upon a horizontal axis. When a predetermined amount of water has bee ...

The limiting values of ceiling, visibility, and wind, or runway visual range, established as safety minimum for aircraft landings and take-offs.

The cardinal points of the compass, i.e. north, south, east, west.

An instrument that automatically records pressure and temperature.

A type of instrument shelter. It is a wooden box painted white with double louvered sides and mounted on a stand four feet above the ground.

Graduated fixed stake used in regions of abundant snowfall to facilitate the measurement of snow depth.