A binnacle may be subdivided into sections and its contents typically include one or more compasses and an oil lamp or other light source.
Binnacle can also refer to the cluster of instruments and switches mounted in a circular casing on or near the steering column of a car.
The construction of many early (mid-18th century) binnacles used iron nails, which were later discovered to cause magnetic deviations in compass readings.
In 1854, a new type of binnacle was patented by John Gray of Liverpool which directly incorporated adjustable correcting magnets on screws or rack and pinions.
[3] The ship's "binnacle list" is the medical department's report of personnel at sick bay, excused from that day's duty.