A cased Imperial standard yard by De Grave & Co London for the County of Essex, dated 1844.Two part standard measure in a mahogany case with brass label: COUNTY OF ESSEX DISRICT 15 De Grave & Co. LONDONIndenture number: 916Each brass measure marked with portcullis verification stamps and Royal Ciphers: VR and ER.Length of case: 100 cm. De Grave of London was established in the 18th century, circa 1767, by Charles De Grave and produced weights, scales and measures. From 1817 to 1844 the business was known as De Grave & Son, and was located at 59 St. Martin’s-le-Grand, London. From 1817 to 1844, the firm was known as De Grave, Short & Co., and from 1845 onwards, De Grave, Short, Fanner & Co. 1851 De Grave, Short and Fanner exhibited at the Great Exhibition, London. From 1890 the firm was located at 13 Farringdon Road, London. The firm became part of the Avery organisation in 1922.For more information on the marks of British standard weights and measures, see: ...