TCN Laser Level RL-200 2S Grading Long Range w/ Receiver KitRL 200 Dual Slope Grading Topcons RL 200 Series revolutionary encoding system provides the highest grade repeatability, 7 arc seconds, of any other laser. No one even comes close. Setup after setup, time after time, youre always right on grade. The RL 200 2S provides dual slopes up to 10% in the X axis, or up to an industry leading 5 to +25% in the Y axis. Control the RL 200 2S remotely When the RL 200 2S is operating, the RC 400 displays all