Sighting device and case green painted cast metal sighting & leveling instrument; adjustable 0 - 800 (yards?) graduated scale arm & level; adjustable sliding scaled level; device embossed, "MACHINE GUN CLINOMETER MODEL OF 1917", "U.S. INSPR. - WL, NO-16837", OTHER SIDE STAMPED, "MFD. BY ATWATER KENT MFG WKS. PHILA., PA." Heavy brown leather carrying belt pouch' brass fittings; front button flap; rear leather belt loop; dark green velvet lining. a. Clinometer. b. Case (leather). B is located within A.
