The complex operations of the boiler room, its emergencies and varying
conditions demand the use of many implements which might at first
thought be out of place. The following illustrations exhibit some of
these conveniences.
[Illustration: Fig. 5.]
Fig. 5, letter A, show the common form of COMPASSES which are
made from 3 to 8 inches long. Letter B, illustrates the common steel
compass dividers, which are made from 5 to 24 inches in length.
[Illustration: Fig. 6.]
In this illustration, A exhibits double, inside and outside
CALIPERS; B, adjustable outside Calipers; C, inside; and D
outside, plain calipers.
[Illustration: Various Tools.]