Gray-Milne seismograph, 1885.
© Science Museum / Science & Society Picture Library
This seismograph was made by James White of Glasgow in 1885. It was designed by Thomas Gray and John Milne (1851-1913), while they were both profesors at the Imperial College of Engineering in Tokyo, Japan. Milne is regarded as the founding father of the science of seismology. The seismograph ran continuously, recording traces with three pens on one roll of paper.