... , DTM315B, DTM322A, DTM322B, DTM325A, DTM325B suits the measurement with target and prism. Angle accuracies are 2 ... stake out coordinates and/or collected data in any mix.ModelDTM312A,DTM312BDTM315A,DTM315BDTM322A,DTM322BDTM325A, ... 0mAdditive constant0Objective lens apertureφ48Resolving power3.75Field of view1°3026m/1000mStadia proportion100Reticle illuminationProvidedAngle measurement sectionHorizontal ...