Spectra Precision C50 Rod Clamp with Quick Release for HR400/HR500/CR600 - Capital Surveying Supplies
Spectra Precision CR600 Combined Machine Control Laser Receiver 1500-ft Indoor/Outdoor Laser Distance Measurer with Backlit Display Color Display in the Laser Level Accessories department at Lowes.com
Spectra Precision CR700 vs CR600 Combined Machine Control Laser Receiver - YouTube
Amazon.com: Spectra Precision CR600 Combination Laser Level Receiver with Rod Clamp, Magnetic Mount, Batteries, Waterproof, Lightweight, Bright LED Indicators : Everything Else