Kirkaldy Testing Museum

The Kirkaldy Testing Museum stands in a four-storey brick building on Southwark Street in south London. The structure was designed in an Italian Romanesque style by Thomas Roger Smith and completed in 1873. Its façade bears the words ‘Kirkaldy’s Testing and Experimenting Works’ and the motto ‘Facts not Opinions’. The ground floor once housed the massive Universal Testing Machine, supported by brick piers in the basement. The building became a listed structure in 1971 and was upgraded to Grade II* in 2014. The museum preserves the legacy of David Kirkaldy, who built the world’s largest materials-testing machine in the 1860s. His machine measured forces up to one million pounds using a system of levers and a sliding jockey weight. It tested components for major projects such as the Eads Bridge in the USA, Hammersmith Bridge and the Skylon for the Festival of Britain. After the Tay Bridge disaster in 1879, Kirkaldy’s tests revealed weaknesses in cast-iron lugs that had caused the collapse. Visitors enter a testing room that still shows its original fitted shelving and matchboard dado. The basement contains a Denison machine used for testing marine chains. Demonstrations break small specimens to show how the Universal Testing Machine works. The museum runs a learning programme called ‘Material Difference’ to support science and engineering education. Volunteers keep the historic equipment in working order for public viewing.