Tangent Theta TT315LRM 3-15x50mm MarksmanTangent Theta 3 15x50mm model TT315M Rifle Telescope is an intermediate range precision sighting instrument for police and security marksmen. Designed as a reduced weight professional marksman rifle telescope, the TT315M incorporates precise adjustment mechanisms with zero stops and mechanical revolution and windage direction indicators that virtually eliminate adjustment errors. The optical path has been optimized for unsurpassed image quality,