A 22 inch bronze standard gauge by De Grave & Co of London used to calculate the capacity of standard dry volume measures. Made for the Borough of Wolverhampton, dated 1909.

The front of the gauge is marked: DEPTH, and has a scale subdivided 0-5-10-15-20-25-30-35-40-41 and signed: DE GRAVE & Co.Ltd LONDON. The scale back of the stick is marked: DIAMETER and is subdivide 0-10-20-30-40-50-55-60-65-75, and marked with portcullis marks, dated 1909.

The sides of the gauge have the engraved instruction for use:

Side 1 reads: Measure the diameter with scale marked “Diameter” and take the reading. Measure the depth with the scale marked “Depth” and take the reading. Add the two readings.

Side 2 reads: The sum will be 10 for ½ Gill. 20 for Gill. 30 for ½ Pint. 40 for Pint. 50 for Quart. 60 for ½ Gallon. 80 for Peck. 90 for ½ Bushel. 100 for Bushel.

Original velvet lined case; dimensions: 61 x 6 x 3.5 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.