Boxing the Compass.
Naming the thirty-two points of the compass in order, and in sequence to
any point called out at random. There are many exercises in the relative
sailing points and bearings that come under the same head. Thus the
direction of two given points being given by names of the compass
points, it may be required to state the number of points intervening.
Brake, Electro-magnetic.
A brake to stop a wheel from rotating. It comprises a shoe, or sometimes
a ring, which by electro-magnetic attraction is drawn against the
rotating wheel, thus preventing it from turning, or tending to bring it
to rest. (See Electro-magnet, Annular.)
Fig. 66. ELECTRIC BRAKE.