Topcon Positioning System’s GRS-1 (Geodetic Rover System) is an all-in-one handheld GNSS receiver and field controller featuring Topcon's exclusive Vanguard chip technology, compass and optional built-in camera. Other features include internal L1 antenna for GIS and navigation uses, internal modem and optional external antenna for GNSS network compatibility, or instantly change to dual constellation for centimeter accuracy RTK. Even use your GRS-1 as a static post-processed receiver solution.
