THE TOOL BOX.
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.
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.
Fig. 6.
In this illustration, A exhibits double, inside and outside Calipers; B, adjustable outside Calipers; C, inside; and D outside, plain calipers.
