The RIANOV CSI (Cant/Slope Indicator) for long-range precision shooters. Cant and Slope are two very important variables in making accurate shots. The RIANOV CSI will replace both your Cant and Slope bubble levels with a state of the art digital unit capable of measuring Cant and Slope to a 10th of a degree. Digital read out eliminates the need for guessing or estimating on the actual value. The Slope feature can be displayed as either Degrees or Cosine Correction Factor. All Aluminum Housing Digital Slope Indicator - Slope can be displayed as Cosine Correction Factor or Degrees Digital Cant Indicator displayed in Degrees Auto-Off functionality Variable Timer (15-90 seconds) Variable brightness Weapon mounted (right or left side) Light weight Long battery life (>20,000 operations) Rianov CSI Cant Slope Indicator PT-CSI