Question

While measuring a length of a pocket watch which unit will be used? Why?
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Answer 1

Answer:

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Explanation:

A Tachymeter can measure both speed and distance. ... A tachymeter is on the bezel of a watch and can measure speed based on time ... The allows the conversion of elapsed time, in seconds per unit, to speed in units per hour.

Answer 2

Answer:

Here is the answer. Hope it helps! Please mark as brainliest if it helped!

Explanation:

While measuring the length of a pocket watch, CM will be used as it is a smaller unit