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Correspondence with the Hydrographer of the Navy, trade journals and chronometer-manufacturers concerning the annual trials of chronometers and deck watches at the Royal Observatory, including:
(i) Notices to trade journals.
(ii) Correspondence with F.J. Britten.
(iii) Results for chronometers in order of merit.
(iv) List of chronometers purchased by the Admiralty.
(v) 'Rough Abstract of the Annual Trial Box Chronometers'.
(vi) 'Abstract of the Annual Trial Deck Watches'.
(vii) Results for deck watches in order of merit.
(viii) List of deck watches purchased by the Admiralty.
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