Title: Parallel Rule with Protractor and Plotting Scale
Object type: Parallel rule with protractor and plotting scale
Date: 1796
Culture: American
Artist:  Lebbeus Dod 
Artist bio: 1739–1816
Artist nationality: American
Artist role: Maker
Medium: Brass, wood
Dimensions: Rule: 12 x 1 3/8 in. (30.5 x 3.5 cm)
Case: 12 3/4 x 4 5/8 in. (32.4 x 11.7 cm)
Credit line: Purchase, Anna Glen B. Vietor Gift, in memory of her husband, Alexander Orr Vietor, 1985
Geography: Made in Newark New Jersey  United States Mid-Atlantic     
Department: The American Wing
Repository: Metropolitan Museum of Art, New York, NY