3D DOZER Comes in Single-Antenna, Dual-Antenna, and Twin-Antenana (shown) configurations. Note: Dual-Antenna configuration does NOT contain Single-Port Slope Sensor (9620) Sign in or sign up for myTopcon to view this page: Sign In Sign Up COMPONENTS GX-55 MC-R3 MC-A1 Single-Port Slope Sensor (9620) GX-60 RELATED PRODUCTS 3D-MC Grade Control Software DOCUMENTS 3D-MC - Reference Guide 3D-MC - Reference Guide Download