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"A Copy of the Certificate of the Commissioners of the Longitude, to the Commissioners of the Navy, relating to Mr Harrison's Time-keeper," followed by "A short View of the Improvements made or attempted in Hr Harrison's Watch."
|Catalogue no: 1467|
|Dewey No:||Subject(s): Courtenay Ilbert Archive|
|Author(s): 1. Unknown, 2. William Ludlam|
|Total pages: 4||Illustrations: 0||Language(s): English||Publication date: Nov. 1765|
|Editor:||Publisher: London Magazine|
|Dimensions: 210mm x 135mm||Condition: Good|
|Related titles:||Related library records:
Pages 585-586 and 666-667 extracted from this edition of the London Magazine and bound between paper covers.
Boldly written in ink on front cover by Ilbert, "Nov: 1765. Excerpt from London Magazine. Mr: Harrisons Timekeeper - Certificate and Improvements"
In the first part, details are given of money to be paid to John Harrison, "...when, and as soon as the principles upon which his watch, or time-keeper, is constructed, are fully discovered, and explained, to the satisfaction of the commissioners ..".
The second part, written by William Ludlam details the four defects found in common watches and the remedies that Harrison employs to correct these faults.
|Room location: Library Extension||Cabinet: F||Shelf: 5|
|Search terms: Chronometers, John Harrison|
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