Service manual

MAY is4
iboy
Regulation
THE BASIC ACCURACY OF THE
ACCUTRON TUNING FORK IS
SUCH
THAT
REGULATION FOR MORE THAN A FEW SECONDS PER DAY IS NOT REQUIRED.
CAINS
OR LOSSES OF A MINUTE OR MORE A WEEK INDICATE THE NEED
FOR REPAIR. NOT
REGULATION.
ACCUTRON regulators
The
ACCUTRON regulators (see Fig.
4
J
are serrated to make them easier la rotate
and to
serve
as a calibration.
G3SERVE THE SEVEN
"DMSKWS
Fig.
»
The
serrations of each regulator form 7 divisions (4 projections and 3 indentions).
Each of these
divisions
is
equal to 2 seconds per day of correction; in other words,
rotating one of the regulators a distance equal to one division, changes the rate of the
ACCUTRON timepiece by 2 seconds per day. Regulation for as little as
x
/x second per
day can be made by rotating one of the regulators
V* division.
The
amount thai
a
regu-
lator is
rotated can be easily gaged by reference to the dot on the top of each cup.
Either one or both of the
regulators can
be rotated in
making a correction; for exam-
ple, a correction of 4 seconds per day can be made either by rotating one regulator 2
divisions, or by rotating each of the regulators 1 division.
Since there are 7 divisions on each of the regulators, and since each
division
is equal
to 2 seconds per day. it
would
be
impossible to make
a
correction of more than 28 sec-
onds per day. even if both regulators were originally set all the way in one direction.