Historic military instrument set features a U.S. military chest, a precision leveling and angle-measuring device utilized by military crews.The fitted storage case measures approximately 6 7/8 in. H x 7 1/2 in. W x 1 5/8 in. D, exhibiting authentic surface wear and minor scuffing to the exterior case commensurate with military handling and storage; the precision instrument is in untested operational condition.