Blank greetings card with envelope featuring:

Henry Kater NPG 2165

© National Portrait Gallery, London

by George Richmond

Inventor of Kater's Pendulum, an instrument which enabled the strength of gravity to be determined. Intended for the law, he was articled as an attorney's clerk but abandoned this path on his father's death in 1795. Instead he entered the army, with a commission in a regiment in India. Here he spent several years assisting William Lambton in the Great Trigonometric Survey. Having returned to England, he became increasingly interested in scientific research. He retired from the army in 1814, and was elected a... more

Card size: 125mm x 175mm

Images are printed in their original proportions, within a white border.