Scope and Contents Correspondence concerning the annual trials of chronometers and watches at the Royal Observatory:Table showing the greatest change in rate, from one week to the next, of various chronometers during the annual trials of 1856-1880, compiled 1885.Correspondence concerning the annual trial of chronometers, 1885, including a rough abstract on the chronometer trial of that year, a letter of withdrawal from the horologist W.G. Schoof, a list of chronometers entered in the trial, a...

Scope and Contents Correspondence regarding chronometers supplied to the Indian Government:Correspondence with the India Office and various chronometer-makers concerning the supply, trial and purchase of chronometers and chronograph watches for the Marine Department, Bombay, 1908-1909.Correspondence with the India Office concerning the trial and purchase of chronometers for the Government Observatory, Colaba, and for the Mathematical Instrument Office, Calcutta, 1908-1910.Correspondence...

Scope and Contents Correspondence with T. Lewis and E. Dent and Co. concerning repairs to clocks and correspondence with W.H. Shepherd, 1888-1889.Correspondence with Victor Kullberg concerning the tender for the supply of new electric dials and the repair of old ones, 1897-1899.Correspondence with clockmakers, principally V. Kullberg and Dent and Co., concerning repairs to Royal Observatory clocks and chronometers, 1901-1911.Internal memoranda on the subject of clocks, chronographs and...