This ADI is calibrated in degrees and cosines give you an instant read out which can enter directly into ballistic software program on your pocket PC or use with a pre-printed angle drop chart to achieve high accurate shooting.

The red needle moves with your rifle and displays a number that indicates the percent your rifle is off level.
Multiply the indicated percent by the target distance to easily calculate the adjusted distance for gravity.
The bubble level which can be flipped to the side also allows you to have an additional indicator to achieve much higher accuracy.
This precision-machined, aircraft-grade aluminum Angle Degree/Cosine Indicator (ADI/ACI) takes the guesswork out of uphill and downhill shots.

Eliminating the need to span from the receiver to the hand guard Allows the shooter to obtain proper eye relief
Precision CNC Machined out of bar stock aircraft grade aluminium to withstand a lifetime of abuse Additional bubble level and angle cosine indicator to assist with consistent accuracy Provides the correct height and forward placement necessary for proper scope mounting on various rifle platforms,including but not limited to  AR15,Remington 700,Savage,Tikka, and etc .