Slide Valve Models
Thomas Jones and T. Gilbert Jones.
Working Models for Engineering Students. Notes on Slide Valve Models. Manchester, England: John Heywood, Ltd., n.d.
This popular educational kit, first released in the 1890s, was intended to assist students with an understanding of valves. On display is the 6th edition, which includes an explanatory booklet and eight model cards, each with moveable parts printed in color.