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Which of the following was an instrument for telling time that was also used in calculating nautical speed or knots?

sounding device

astrolabe

hourglass

User Jason Law
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2 Answers

4 votes

The correct answer is hourglass

User Alvaropaco
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2 votes
it's hourglass

i am 100% sure that hourglass is correct
User Mathijs Kwik
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