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n. An optical instrument for measuring crystal angles, as between crystal faces.

n. A radio receiver and directional antenna used as a system to determine the angular direction of incoming radio signals.

n. A device used to measure the angles of crystals.

n. A radio direction finder.

n. An arthrometer (device for measuring the arc or range of mobility of a joint).

n. An instrument for measuring angles, especially the angles of crystals, or the inclination of planes.

n. An instrument for measuring solid angles, or the inclination of planes, particularly the angles formed by the faces of crystals.

n. direction finder that determines the angular direction of incoming radio signals

"MN This is a goniometer or instrument for measuring angles; it was a precision instrument, lightweight and easy to transport, and was used at sea to measure distances by angle and the height of heavenly bodies, which permitted the observer to determine his position."

hand goniometer   

direction finder   

mandibular goniometer    occipital goniometer    three circle goniometer    two-circle goniometer   

accelerometer    anemometer    densitometer    dynamometer    fluorometer   

solida    daguerreotype