NATIONAL PHYSICAL LABORATORY (C) CROWN COPYRIGHT / SCIENCE PHOTO LIBRARY NATIONAL PHYSICAL LABORATORY (C) CROWN COPYRIGHT / SCIENCE PHOTO LIBRARY
Differential analyser. The operator is using this part of the differential analyser's equipment to follow an input curve. Differential analysers were used to carry out mathematical calculations. Photographed in 1954, in the Mathematics Division of the National Physical Laboratory, Teddington, UK.
Model release not available. Property release not required.