Vector Optics Angle Indicating 30mm ACD Mount

Diameter: 30mm with 1" adapter

Length: 73mm (2.9 inch)

Ring Width: 14mm (0.5 inch)

Indicator Dia.: 30mm (1.2 inch)

Weight: 62g (2.2 ounce)

Finish: Black matte

Angle indicator and scope level support long range precision shooting

Designed for real fire arms

The bubble level can be put on either side

See-through style

Level and indicator were both center aligned during the assembling  

High quality 6063 T6 aircraft grade aluminum alloy

Including items: hex key, 25.4mm 1" adapter

Ps:1, If not satisfied with the angle indicator position, use the proper screwdriver to release the indicator screw and reset its position.

2,  If the bubble is not shown in the middle or is not vertical when it's on the left side, use proper screwdriver to adjust the tiny screw for different height.

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.