This is a two part folding pocket stereoscope, thick metal eyepieces with four 'legs' attached, and a flat metal piece with two windows for placing the pictures. The 4 legs fit into slots in the metal picture holder thus creating a sturdy implement for viewing 3D pictures. The stereoscope comes in its original canvas case. The stereoscope is marked with the little arrow that denotes British Military. The case is marked 'A.M. Stereoscope Type D 14B/746'