Brass Box "Pocket" Sextant ca late 19th Century U-2 an organization under joint operation

an organization under joint operation of the US Air Force and civil authorities

Very cool indeed

part number 2550

An unusual feature is that the minute hand of the stopwatch rotates counterclockwise as it counts the minutes

equipped with twin J-34 engines

Brass Box "Pocket" Sextant ca late 19th Century U-2 an organization under joint operationThis is an original brass Box Sextant, or "Pocket" Sextant. At 3 inches in diameter and 1. 5 inches when closed, it could easily fit in the pocket of a mariner for determining position at sea or for determining horizontal positions on land. Box sextants have been around since the early 1800's. We speculate this example was made in the late 19th century. The protective outer case unscrews from the mechanism platform and screws back on to it's opposite