Chondrometer; Bryan Corcoran Ltd.; c1870's; OT.2009.28



About this object

This pendulum scale was created to measure the weight density of grain bushels and was also known as a Grain Weight Tester. It likely would have been used to determine the money given to farmers for their crop yields. It was found in the office effects of Otautau Town Clerk and Businessman/Agent John Fisher (1863-1950).

A bushel is a standardised volume measurement that equals 8 gallons (approximately 30 litres), and different grains had different standard weight measurements for this volume. Wheat is expected to be 60 pounds per bushel (27 kgs), barley should be 50 lbs (22 kgs), and oats 40 lbs (18 kgs).

This particular device is unusual in that it's a pendulum scale, which was used to weigh letters much more often than grain.

(Copyright status relates to the photos shown here, not the object itself)


Bryan Corcoran Ltd.

Maker Role


Date Made


Place Made

Europe, United Kingdom, England, London

Medium and Materials

inorganic, processed material, metal, alloy, brass (?)
organic, vegetal, processed material, wood


h 395 mm x w 290 mm x d 220 mm

Subject and Association Keywords


Object Type


Object number


Copyright Licence  

Attribution (cc) Attribution (cc)

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