Variometer comprising a measuring box
Variometers
Vector measuring current meter
Vehicle turn angle detecting device
Velocity measurement instruments
Velocity vector sensor for low speed airflows
Velocity-measuring device
Vertical position aided inertial navigation system
Vessel location system
Vessel speed detecting device
Vessel speed detecting device
Vessel speed detecting device
Vessel speed measuring system for the marine propulsion machine
Visually enhanced weather vane apparatus
Vortex advisory system