Scope and Contents Correspondence on the workings of, packing of, repairs to, ratings of, and transactions involving chronometers. The volume covers chronometer trials, 1840-1865; trials for chronometer ratings for the Indian Stores Department, the Italian government and mail watches; the influence of air pressure on clock rates; J.B. Harbard's description of clock rates; a time piece for measuring a ship's speed; a clock for Ipswich Town Hall; and a programme of horological instruments by M.F. Dent for the...

Scope and Contents Correspondence on the rates of, repairs to, trials of, sales of, regulations of, requests on, and ownership of chronometers. The volume covers chronometers for ascertaining a ship's speed; regulations for the testing of chronometers at Liverpool Observatory; mail guards' watches; accounts for chronometers and relevant charges; chronometers for the Indian Department and the Austrian government; the Burdett-Coutts prize for the best essay on balance-springs; and a Swiss report on chronometers...

Scope and Contents

Correspondence on the rates of, repairs to, damage to, ownership of, conversions to, and carriage of various chronometers. The volume covers the Burdett-Coutts prize essay for a compensation balance; problems with the Portsmouth sidereal clock; and proposals for a new electric turret clock at the University of London. The correspondents include F.J.O. Evans, H.C.G. Rümker, C.A.F. Peters, G.H. Richards, C. Wheatstone, C.V. Walker and W.B. Carpenter.

Scope and Contents

Correspondence on the ownership of, rates of, accounts of, listings of, repairs to, and packing of various chronometers. The volume includes papers on the defects and repairs to the Portsmouth sidereal clock; trials of new deck clocks; a report on the establishment and inspection of a new electric turret clock for London University; and enquiries on the Greenwich sidereal standard clock by J.W. Reffitt. The correspondents include F.J.O. Evans, R. Hall, W.B. Carpenter and W.H.M. Christie.

Scope and Contents Correspondence and related papers on the time signal and time ball service, including the failures of the Greenwich time signal; requests for information on time balls; the establishment of time balls or guns at Queenstown, Sheffield, Bristol and Manchester; a paper by S.P. Langley 'On the Allegheny system of electrical time signals'; experiments with the Post Office chronopher; corrections and errors of the Post Office and Westminster clocks; the system of operation employed by the London...

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 Papers concerning refinements and improvements to chronometers. The volume includes balance stopping apparatus; patent specification for W.J. Thictherner's watches; R.H. Rideout's method for compensating clocks; cheap observatory clocks by J.F. Stanistreet; experiments with sidereal clocks and their barometric inequalities; W.G. Schoof's paper on improvements in the lever escapements for chronometers; apparatus for altering the scale of compensation of chronometers; improved gimballing...

Scope and Contents

Correspondence and papers concerning entrants and ratings for the annual competitive chronometer trials. The volume includes ratings of repaired chronometers and regulations on the purchase and exchange of chronometers. The correspondents include W.H.M. Christie, W. Harkness, G.H. Richards, F.J.O. Evans and various chronometer makers.

Scope and Contents

Correspondence and papers concerning entrants and ratings for the annual competitive chronometer trials. The volume includes papers on the handling of chronometers and the exchange and purchase of chronometers, most notably for the Arctic expedition. The correspondents include G.H. Richards, F.J.O. Evans, T. Nelson and various chronometer makers.