EditorialPleated cockade fan, Glazed cotton leaf, tortoise shell handle, silk cord, Pleated cockade fan. Leaf of glazed cotton with silk cords attached--one to the upper center of leaf and the other to the lower center through a hole in the tortoiseshell tube. ...
EditorialCollapsible ladders, Warfare in the Middle Ages, Overcoming a Fortress Wall, Escalade, two telescoping ladders, woodcut, p. 353, (Liber decimus), 1483, Roberto Valturio: [De re militari]. Verona: [Boninus de Boninis], [1483].
EditorialTelescoping opera glass, ca. 1830, Austrian, Vienna, Mother-of-pearl, yellow metal mounts, Height (closed): 1 3/8 in. (3.5 cm), Natural Substances.