Surveying theodolite, made by Augustus Platt, Columbus, Ohio, probably in the second quarter of the nineteenth century. The telescope is 13 3/4 in long; the needle is 3 1/2 in. long; the limb is 5 1/4 in. in diameter. Augustus Platt and his father, Benjamin, also a well-known instrument maker, moved to Columbus, Ohio about 1817. Courtesy Ohio State Museum
Provenance
Photographs from the estate of Henry Kauffman. Credit to be given to Ohio State Museum.
From explanation next the compass in picture: "Surveyors compass used by Caleb Ammidown in 1796 to survey the "Poll" Parish in Southbridge. The compass was made by Peregrine White, a Clockmaker and Silversmith of Woodstock."