A broomstick was used to make the plug and it
was whittled in the shape shown
[Illustration: Fits Four Different Shaped Holes]
in Fig. 1. The holes in the different places as shown in Fig. 2,
were fitted by this one plug.
** How to Make a Lightning Arrester [122]
Secure a piece of wood about 3-1/2 in. square that will furnish a
nice finish and round the corners and make a small rounding edge
as shown in the sketch. From a piece of brass 1/16 in. thick cut
two pieces alike, A and B, and match them together, leaving about
1/16 in. between their upper edges and fasten them to the wood
with binding-posts. The third piece of brass, C, is fitted
[Illustration: Lightning Arrester]
between the pieces A and B allowing a space of 1/16-in. all around
the edge. One binding-post and a small screw will hold the piece
of brass, C, in place on the wood. The connections are made from
the line wires to the two upper binding-posts and parallel from
the lower binding-posts to the instrument. The third binding-post
on C is connected to the ground wire. Any heavy charge from
lightning will jump the saw teeth part of the brass and is
grounded without doing harm to the instruments used.
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