The Topcon LS-B20 Receiver delivers a versatile, low cost solution for grade checking and machine control grade applications. With its integrated magnetic mount and 270 detection range, the LS-B20 can be easily installed on a vast array of machines with 4 different grade zone selections. In addition, the lightweight design allows the LS-B20 to be paired with Holder-6 and mounted on a grade rod to check grade as well.