A few of the principal sorts have been illustrated in this work and
still others will be described in the “Index” at the close of the work.
Fig. 123, page 251, illustrates an _elbow_ with outlet. This is
sometimes spelled with the capital L, and again as an ell.
Fig. 124 shows a long _nipple_.
Fig. 125, page 253, exhibits a _bushing_, used to reduce one size pipe
in a line to another.
Fig. 126 is a _cross tee_. This is frequently spelled with a capital T.
Fig. 127 is a _plug_—used to stop apertures in plates or pipes.
Fig. 128, page 254, illustrates a _lock nut_.
Fig. 129 shows a T, as illustrating the difference between a T and a
cross T, Fig. 126.
Fig. 130 is a _coupling_.
Fig. 131, page 255, represents a _reducing coupling_.
Fig. 132 is an illustration of a pipe _union_.