liquid compass![click to hear](/images/speaker.jpg)
Instrument with magnets that floats on a liquid; it indicates magnetic north.
pivot ![click to hear](/images/speaker.jpg)
Axle around which the compass card rotates.
sliding cover ![click to hear](/images/speaker.jpg)
Retractable cover that protects the glass dome from scratches when not in use.
bowl ![click to hear](/images/speaker.jpg)
Watertight case containing the magnetic elements, which float in a liquid (oil or alcohol) to reduce oscillations.
compass card ![click to hear](/images/speaker.jpg)
Rotating disk graduated from 0° to 360° and integrated with two magnets; it shows the cardinal points and the points in between.
glass dome ![click to hear](/images/speaker.jpg)
Transparent nondistorting hemispherical cover for the bowl containing the liquid.