NATIONAL PHYSICAL LABORATORY (C) CROWN COPYRIGHT / SCIENCE PHOTO LIBRARY NATIONAL PHYSICAL LABORATORY (C) CROWN COPYRIGHT / SCIENCE PHOTO LIBRARY
Deadweight machine. This is a 50-ton deadweight machine using the standard ton. Deadweight machines use large weights of a high accuracy, and are used to calibrate other weights. Photographed in 1953, in the Engineering Building at the National Physical Laboratory, Teddington, UK.
Model release not required. Property release not required.