Process and device for estimating the altitude of an aircraft in

Process for measuring the direction and intensity of gaseous or

Radionuculide counting technique for measuring wind velocity and

Rapidly responding vertical speed indicator for use in aircraft

Rate of turn indicator

Rate of turn indicator

Redundant inertial measurement system

Redundant system for the indication of heading and attitude...

Redundant vacuum system for aircraft instruments

Retroflective attitude determining system

Rotational position indicator

Running speed detecting device for marine vessels

Safe take-off indicators

Sailboat steering indicator system

Sailboat wind direction indicator

Sailing course computer

Semiconductor flow detector for detecting the flow rate and flow

Sensing apparatus for inclinometers

Sensor and method for measuring the relative velocity of an onco

Sensor for detecting the influence of cross wind on a vehicle