02:15:50
The author uses
to explain the
importance of the chronometer and help the reader visualize
Read the excerpt from Ship's Chronometer from HMS
Beagle.
It is made of brass and is around the size of a large pocket
watch, with a normal clock dial showing roman numerals
and a smaller dial at the bottom for the second hand. The
clock is suspended inside a swivelling brass ring fitted to the
inside of a wooden box - this is the key to keeping the
chronometer level even in an unsteady ship.
Mark this and return
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