Correspondence and other papers relating to the annual trials of chronometers at the Royal Observatory:

Correspondence with the Hydrographer of the Navy and internal memoranda concerning the results of the annual trial of chronometers, 1912-1913.

Correspondence with trade journals concerning the publication of the results of the annual trial of chronometers, 1913.

Correspondence with the Hydrographer of the Navy concerning the purchase of chronometers, 1913.

Correspondence concerning a special trial of non-magnetic watches for submarines, 1910.

Correspondence concerning a special trial of new and second-hand box chronometers, including correspondence with various trade journals and chronometer manufacturers, 1916.

Printed table of the trial numbers and prices of the first six chronometers of each annual trial, 1863-1906.

26 printed copies of the 'Regulations for Trial of hack watches'.

Printed table of the trial numbers and prices of the first six chronometers of each annual trial, 1863-1906.

25 printed copies of the 'Regulations for Trial of box chronometers'.

Three printed forms of the 'Regulations for Purchase of Chronometers'.

25 printed copies of 'Regulations for Trial of Chronometer and Pocket Watches'.

'Trial numbers and prices of chronometers in the Annual Trials from 1863 to date', 1908.

20 rough copies of 'Notice of Annual Chronometer Watch Trials', 1916.