In these teacher materials, students will discover how simple machines (lever, pulley, inclined plane, wedge, wheel and axle, and screw) have played a part in the development of arms and armor.
France (?), late 15th Century
steel and brass; incised decoration; pierced traceried Gothic windows, Rack: w. 39.40 cm (15 1/2 inches); Crank: w. 30.20 cm (11 7/8 inches); Gear housing: h. 12.10 cm (4 3/4 inches). Gift of Mr. and Mrs. John L. Severance 1916.2082