Magnet selector or switch

Marine instrument

Means and techniques useful in detecting ice on aircraft surface

Means for attaching a sounding balloon

Measuring equipment for the determination of terrestrial refract

Meteorological data encoder for measuring atmospheric conditions

Meteorological measuring apparatus

Method and apparatus for acoustically measuring rainfall

Method and apparatus for determining the covering on a road surf

Method and apparatus for determining time, direction and composi

Method and apparatus for measuring a water condition

Method and apparatus for remote measurement of variation in wind

Method and apparatus for remote monitoring of oceanographic cond

Method and apparatus for the artificial triggering of lightning

Method and device for detecting icing of objects found in air fl

Method and device for measuring the height of a product in surro

Method and device for measuring vertical movements in the absenc

Method for alerting patients with diseases affected by climate,

Method for estimating rainfall and a sensing device therefor

Method for measuring velocity and direction of currents in a bod