Selected from hard-to-find 19th-century sources? these royalty-free black-and-white engravings cover the entire spectrum of scientific study. Featured items include prisms? gyroscopes? barometers? pendulums? pneumatic machines? astrolabes? telescopes? microscopes? spectroscopes? and many other instruments. With 436 images to choose from? this collection offers a wealth of distinctive illustrations.Mixed media product | 48 pages204 x 270 x 6mm | 226.8g39191Dover Publications Inc.New York? United StatesEnglish