Correspondence with L.D.A. Jackson and J. Forrest regarding a system of simplified weights and measures, 1877.

Correspondence regarding the Royal Society's copy of the standard yard, 1877.

Letter to 'The Times' concerning the standards of length at the Guildhall, 1878.

Correspondence with R. Ferguson and F.F. Barham, 1878.

Notice of the International Congress for the Unification of Weights and Measures, 1878.

Correspondence with the Royal Mint concerning double standards for coinage, 1878.

Correspondence with G. Jostin regarding the testing of gas meters, 1878.

Correspondence with E.A. Wood regarding the testing of the standards on the Observatory wall, 1878.

Correspondence with J.E. Hilyard concerning the suggested change in the length of standard yard No. 11, 1878.

Correspondence with the Board of Trade concerning the construction of gauges for cylindrical measures of capacity, 1879.

Copy of correspondence relating to the establishment of public weighing machines, 1879.

Copy of a report by the Board of Trade on the Weights and Measures Act, 1879.

Remarks by Sir George Airy on the decimal coinage and weights system, 1879.

Memorandum on the comparison of the U.S. yard standard with the imperial standard, 1879.

Letter from E.W. Strecter concerning gold-marking, 1879.

Sample of 'Swedish Filter Paper', 1879.

Letters and miscellaneous papers concerning standards of weights and measures, including correspondence with the Decimal Association, 1880-1891.

Miscellaneous correspondence relating to weights and measures, 1891-1911.