US Army spotting scope M49 mounted on tripod, brass back marked Telescope OBSM49 Stock no. 757844
File:View through a M49 spotting scope at the 500 yard line during the "Division Matches" on Camp Hansen, Okinawa, Japan, Jan. 31, 2012 120131-M-KS710-003.jpg - Wikimedia Commons
WWII M49 Military Observation Eyepiece Focus 20 Power Telescope, Tripod & Case
military surplus M49 spotting scope M15 tripod stand M164 scope case | eBay