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Introduction

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Perhaps the surest indicator of technological progress
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The wind indicator (anemoscope) of Timosthenes

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It was a simple nautical instrument used
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The density metre of Archimedes (3rd c. B.C.)

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It was an instrument used to measure
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The hodometer of Archimedes (3rd c. B.C.) – The first… road distance calculator

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It was a mechanism for the accurate
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The nautical “hodometer” (3rd c. B.C.)

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It was a mechanism for accurate measurement
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