Could anyone tell me the specific name of this tripod "Type 2" ? It apparently fit into a vertical recess - Artillery ? It would also expand into a tripod. Was found with this Atwater Kent Clinometer. http://i725.photobucket.com/albums/ww257/buillder/%20%2014%20Sight%20Tripod%20b.jpg http://i725.photobucket.com/albums/ww257/buillder/%20%2014%20Sight%20Tripod%20c.jpg