Compass with folding clip cover. There is a written description about the compass which is on display. Please see media file for more information.compass, survival, us magnetic compass, rung sat, swamp death, mekong delta, quang tri provence, phuoc tuy province, 4/1 arvn bn, 1st regt, 1 div, thua thien province, local force battalion, 302 bn, 3 corps, wo2 (temp) george maclauchlan logan, 33649, royal australian infantry corps, 7th battalion, royal australian regiment, australian army training team vietnam (aattv), jungle training centre, canungra

US Magnetic Compass: Made in 1966; used in Vietnam War (Sometimes referred to as a Surveyor's Compass or, less accurately, a prismatic compass). When unfolded, the user puts a thumb through the wire loop, holds the lens in front of the eye, and aims the wire 'aiming line' at the required object or direction. While held, the user then looks down towards the dial to read the compass direction. The engraving underneath includes a reference to radioactive material ('H3' – the tritium isotope of Hydrogen) and is used in the luminous paintings that mark principal compass directions.(with lid closed) U.S. COMPASS MAGNETIC FSN 6605-846 7618 UNION INSTRUMENT CORP. PLAINFIELD, N.J. DA23-195-AMC-00906(T) (lid open; distance scale on edge - see Media item #5) 1000 2000 3000 1:25000 METERS (underside) RADIOISOTOPE H3 A.E.C. LICENSE NO. 8-5736-3 CONTAIN 75 MS. RADIOACTIVE H3 DO NOT OPEN DISPOSE OF PER AR 755-380 IF FOUND RETURN TO MILITARY AUTHORITY