38mm θ ƿ ̽ 56 긱Ʈ ̾Ƹ带 ϰ, ǹ ó 3 ÷ ÷ ũγ īͿ 9 긱Ʈ ̾Ƹ ƿ Ŀ ̾ ũγ븶 ġ. 60ð Ŀ긦 ϰ 0.01ʱ ǥ ִ 3600 ƽ Ʈ žߴ. 1649.
ȭƮ ÷ ̾ ÷ â, 2 ÷ 60 īͿ 60 ī ϰ 9 ̾Ƹ ε ȭ ũγ븶 ġ. 56 긱Ʈ ̾Ƹ带 38mm θ ƿ ̽ Ʈ ÷ ۾ Ʈ ġߴ. 1788.
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