Trimble CR600 Reciever, Magnetic base, and the Surveyor Stick attachment, all 3 as pictured are up for sale. I included a short video of the laser reciever in operation. The reciever has narrow to wide accuracy adjustment and also a backhoe function. I have used this laser receiver on my dozer blade for grading and also on my backhoe for digging trenches. This saved me time and man power because its a one person opeation, no need for another person checking grade with a surveying stick. Thanks, Gary