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.
