Scope and Contents

Correspondence and papers concerning valuations, exchanges and sales of chronometers by the Admiralty and the Royal Observatory. There are tables of the ratings of individual chronometers. The correspondents include F. Beaufort and J. Barrow.

Scope and Contents Correspondence between the Admiralty and chronometer makers regarding the latter's claims for rewards for making improvements to chronometers. The claims were made principally by J.S. Eiffe and J.G. Ulrich, although there are also claims from R. Molyneux, M.R. Parkinson and C. Frodsham. The correspondents include F. Beaufort, R .Willis, C. Wheatstone, J. Barrow and many of the more famous chronometer and watch-makers. The volume includes unconfirmed minutes of the Royal Society, 10 June...

Scope and Contents

Correspondence between the Admiralty and chronometer makers regarding the latter's claims for rewards for making improvements to chronometers. Most of the papers concern the claims made by E.T. Loseby, but there is the repeat of a claim by J.G. Ulrich, in the form of a memorial. The papers also include several pages of calculations and three newspaper cuttings relating to Loseby's claims.

Scope and Contents

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty. There are also papers on the printing of the chronometer rates and a printed circular from 'The Horological Journal' to its readers containing a letter on 'rating chronometers on trial at Greenwich'.

Scope and Contents

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty. There are also printed copies of the rates of chronometers on trial at the Royal Observatory in 1864, 1865, 1866, 1867 and 1868.

Scope and Contents Correspondence on the ownership of, purchase of, loss of, conversion of, and trials of chronometers. There is correspondence with the Admiralty and with many chronometer makers. The volume also includes printed copies of 'Instructions for packing chronometers sent from abroad, or from the outports to the Royal Observatory at Greenwich'; a copy of the rules of the Clockmakers Company governing the issuing of the prizes; two pages extracted from 'Nature', 29 March 1877, concerning 'Ships'...

Scope and Contents

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty.

Scope and Contents

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty.

Scope and Contents

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty.

Scope and Contents

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty.

Scope and Contents

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty. There is also a printed paper on sending defective chronometers from abroad to the Royal Observatory.

Scope and Contents Miscellaneous correspondence and related papers on the following subjects:Covering letter from W.H.M. Christie to a report by the Board of Visitors, received with thanks by C.A.B. Patey, 1888.Letter from W.H. Preece regarding Treasury matters, 1888.Mr Raikes' reply to a parliamentary question on the time service transmitted by J.W. Board, 1888.Letters from Christie to W.H. Preece regarding reforms of the time signal service, with letters of acknowledgement...

Scope and Contents Miscellaneous correspondence regarding the following subjects:Telegraphs announcing errors and failures in the time signal, 1879-1880.Complaints about the time signal sent to Glasgow, the General Post Office and Portsmouth, 1880-1881.T. Lewis and W.H.M. Christie on the correction of the mean solar clock and errors in the 10 o'clock signal, 1884.Explanation by W.H. Preece to H.H. Turner that the failure of the time signal is due to poor batteries,...

Scope and Contents Correspondence and papers on telegraphic communications, including the conditions of use of telegraph wires between the Admiralty and the South Eastern Railway; proposed arrangements of galvanic wires and circuits for working the sympathetic clocks; the circuit and plan of the galvanic wires in the Lombard Street Post Office; various improvements and efficiencies in the telegraph; a report on the working of galvanic apparatus at the Royal Observatory; sketches of the automatic switch for the...

Scope and Contents Correspondence and papers on telegraphic communications, including the failure of signals and breakdown of equipment; the agreement for use of the telegraph between the Admiralty and South Eastern Railway; renewal of telegraph wires in Greenwich Park; three samples of proposed cables, one being a specimen of Caoutchouc cable, with patent; notes on the arrangement of overhead wires; adjustments to the Greenwich sympathetic clock; R.L. Jones' system of clock regulation by electricity; a theory...