The GM-50 Series is the perfect entry-level site layout and survey tool offering reliability and flexibility without sacrificing cost or functionality. The sleek design is built tough, with a water and dustproof IP66 rating, integrated Bluetooth® capability and an internal antenna, enabling you to deliver measurements cable-free to your data controller, streamlining your equipment weight and workflow. The GM-50 is also armed with a top line EDM, generous internal memory storage, and SDRbasic on-board software so you have everything you need to get the job done out in the field.