By Walt Moore, Senior Editor | September 28, 2010

 Apache's Bullseye 6 machine-control laser receiver can be fitted to hydraulic excavators and backhoes to provide offset/on-grade readings. An angle-compensation feature automatically calculates and corrects the grade display for the angle of the digging arm, and grade checks can be made with the arm extended or retracted up to 30 degrees. The Bullseye 6 works with all rotating lasers; provides 360-degree reception; allows a choice of accuracies; and is self-contained, permitting quick mounting and easy shifting to another machine. Apache 6