scribed
on page 174. As for the ammeter, if a motor-generator set, Tungar
Rectifier or a charging-rheostat is used, the ammeter is always
furnished with the set. If a lamp bank is used, a switchboard type
meter reading to about 25 amperes is suitable. With the constant
potential system of charging, the ammeters are furnished with the
motor-generator set. They read up to 300 amperes.

The bottles for the distilled water and electrolyte are not of special
design and may be obtained in local stores, There are several special
water bottles sold by jobbers, and they are convenient, but not
necessary. Figure 133 shows a very handy arrangement for a water or
acid bottle.

[Fig. 67 Working drawing of eight foot charging bench]

[Fig. 68 Working drawing of a ten foot charging bench]

[Fig. 69 Working drawing of a twelve foot charging bench]

[Fig. 70 Working drawing of a twelve foot charging bench (without
drain rack)]

[Fig. 71 Working drawing of a two man work bench to be placed
against a wall]

[Fig. 72 Working drawing of a double, four man work bench, with two
tool drawers for each man]

WORK BENCH

A work bench is more of a standard article than the charging bench,
and there should be no trouble in building one. Figure 38 illustrates
a good bench in actual use. A vise is, of course, necessary, and the
bench should be of solid construction, and should be given several
coats of asphaltum paint.

[Fig. 73 Working drawing of a two man, double work bench]

Figure 71 shows a single work bench which may be placed against a
wall. Figures 72 and 73 show double work benches. Note that each bench
has the elevated shelf, which should not, under any consideration be
omitted, as it is absolutely necessary for good work. The tool drawers
are also very convenient.

It is best to have a separate "tear down" bench where batteries are
opened, as such a bench will be a wet, sloppy place and would not be
suitable for anything else. It should be placed near the sink or wash
tank, as shown in the shop layouts illustrated in Figures 136 to 142.

SINK OR WASH TANK

[Fig. 74]

Fig. 74. Sink with Faucet, and Extra Swinging Arm Pipe for
Washing Out Jars. Four Inch Paint Brush for Washing Battery
Cases

An ordinary sink may be used, as shown in Figure 74. This figure also
shows a convenient arrangement for washing out jars. This consists of
a three-fourths inch pipe having a perforated cap screw