Notes the Management of Chronometers and the Measurement of Meridian Distances (Classic Reprint) - Hardcover

Charles F. A. Shadwell

9780260136367: Notes the Management of Chronometers and the Measurement of Meridian Distances (Classic Reprint)

Hardcover

ISBN 10: 0260136360 ISBN 13: 9780260136367

Publisher: Forgotten Books, 2017

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Master the art of marine timekeeping for accurate longitude.

This guide explains how chronometers are managed, corrected for temperature, and recorded to support reliable meridian distance measurements at sea. It highlights practical methods for evaluating results, noting how readings should be reported in both arc and time for clear comparisons and chart use.

The discussion blends historical practice with practical advice. Learn how temperature effects are accounted for, why uniform temperature helps, and how to judge when chronometer results disagree with other observations. The text also shows how records should reflect ship conditions, including how the ship’s head and magnetic environment may influence readings.

How to record chronometer results clearly, with arithmetic and estimated means
Why temperature corrections matter and how they’re applied
How to compare chronometer readings with astronomical observations to validate results
What to note about ship conditions and their possible effects on measurements

Ideal for readers of historical navigation, maritime science, and the precise practice of determining longitudes at sea.

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