Galton Anthropometric Apparatus of Wool Threads, for Colour Vision Tests, by W. Groves, London, c.1884

"Twenty-two differently coloured skeins of wool are behind a glass window (broken), in numbered wooden holders, with below a separate hole for each skein and two ivory pegs. The top front part of the board is hinged so that the order of the colour of the skeins can be changed or taken out altogether and replaced by other colours, and the whole is suspended horizontally from a wall by two copper alloy rings.

Associated with the apparatus, under the same inventory number, are the following:

Bag 1 - Bundle of coloured wool skeins;

Bag 2 - Various wood and metal fittings (possibly unrelated, they look like miscellaneous components and fragments from the Galton Collection generally);

Bag 3 - Glass plate, covered in dry black ink or paint.

An additional bundle of coloured wool is 14650."