4 0 c m
35cm
actual image size: 27cm x 32cm
Description
Sir Charles Vernon Boys (1855-1944) designed this apparatus for determining the calorific value of coal gas. It was adopted as the standard method of testing gas in London and was later used throughout Britain. Made by A Gallenkamp and Co.
Image Details
Image Ref.
10311498
© Science Museum / Science & Society Picture Library