Although the marine chronometer is in a sense a portable timepiece,
still it is not, like a pocket watch, capable of being adjusted to
positions. As we are all aware, the detent escapement is used in fine
pocket watches, still the general feeling of manufacturers is not
favorable to it. Much of this feeling no doubt is owing to the
mechanical difficulties presented in repairing the chronometer
escapements when the detent is broken, and the fact that the spring
detent could not be adjusted to position. We shall have occasion to
speak of position adjustments as relate to the chronometer escapement
later on.
ADVANTAGES OF THE CHRONOMETER.
We will proceed now to consider briefly the advantages the detent
escapement has over all others. It was soon discovered in constructing
portable timepieces, that to obtain the best results the vibrations of
the balance should be as free as possible from any control or influence
except at such times as it received the necessary impulse to maintain
the vibrations at a constant arc.
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