4 protractors.

1. Folding arm vernier protractor. London, W&S [William and Samuel] Jones of Holborn, late 18th or early 19th c. Brass, diam.: 22 cm. Wooden box (24 x 15,4 x 4 cm) with seller's label: "Millikin & Lawley". - 2. Moscow, Теофuвuка (Theofuvuka), s.d. Brass half-circle, diam. 21,5 cm. Velvet lined case (22,7 x 17 x 2 cm). - 3. [According to the case:] Brussels, R. Drosten/ C. Riefler/ C. Devienne, late 19th c. Vernier protractor. Stainless steel, diam.: 14 cm. Velvet lined case (19,5 x 12,5 x 3,5 cm). - 4. Rare and ingenious semi-circular protractor with inclining parallel rule invented by Émile Hecq-Godeau. Brussels, J.B. Tibaut-Desimpelaere, ca. 1900. Brass, diam.: 22 cm.