sillometer means A 19th-century device for measuring the speed of a ship without using a log-line. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- A 19th-century device for measuring the speed of a ship without using a log-line.“It is moved by a paddle, that may be placed under the keel at will, and is supported by a plug sliding in a tube like that of the sillometer, but turning with the paddle and the rod.”