One of four original Swan and Raven models used by William Froude on River Dart in 1867 measuring 12 foot in length. One of four original Swan and Raven models Froude 1867
One of four original Swan and Raven models used by William froude on River Dart in 1867 measuring 12 foot in length. One of four original Swan and Raven models Froude 1867
Wooden framework for Froude's Resistance Dynamometer, c.1871 Framework for Froude's Resistance Dynamometer Froude 1870-1871
Lattice-work index arm with lead counterweight on a wood level, for Froude's Resistance Dynamometer, c.1871 Index arm with lead counterweight, for Froude's Resistance Dynamometer Froude 1870-1871
