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A former gunner officer in the British Army, Colonel John Wilmer (1841–1920) joined the Survey of India in 1871 when he was given charge of No. 5 Party surveying Bhopal and Malwa (today in Madhya Pradesh state). His No.14 Survey Party was responsible for the pendulum, a device used to discover variations in the direction of gravity, due to the variable density of the earth’s crust. This was important to the exact calculations of the survey.
oil on canvas
H 59.9 x W 50.8 cm
gift from Major General Sir G. Burrard, 1951