English, dated 1911, weights engraved 'COUNTY BOROUGH OF PRESTON, DE GRAVE & CO LTD, LONDON' and all numbered 3097, with many calibration verification and Exchequer marks, in a large French polished mahogany case with folding steel handles, catches with large lock and key, brass plaque to the lid reads 'COUNTY BOROUGH OF PRESTON, DE GRAVE & CO LTD, LONDON', the Troy weights of standard cylindrical pattern in gunmetal consisting of 30 weights from 500oz Troy down to 0.001oz Troy with the small weights in a separate French polished velvet-lined mahogany case, case width

Footnote: this set of weights was specially made to be used by the weights and measures department to calibrate any of the inspector's weights that were to be taken out on site.