This image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
License this image for commercial use at Science and Society Picture Library
Ballistic galvanometer, type 4789, no. 85579, by H Science Museum Group © The Board of Trustees of the Science Museum
Ballistic galvanometer, type 4789, no. 85579, by H. Tinsley & Co. Ltd. London, SE25, England.