"GRAFF, WASHBOURNE & DUNN NEW YORK" and
"U.S. NAVY N 1077"
length 11 inches; width 5 inches; height 4.75 inches
Graff, Washbourne & Dunn were New York silversmiths who made this stadimeter for the U.S. Navy during the War with Germany, 1917-1918. The Navy transferred it to the Smithsonian in 1921. It has a height scale that reads from 50 to 200 feet, and a distance drum that reads from 200 yards to infinity.