Sniper Tools' Angle Cosine Indicatior - Hunter is an evolved step forward in angle indicators, and a great and simple tool for hunters and shooters in mountainous terrain. It can be utilized with ballistic targeting software, or to manually obtain corrected gravity distance to a target above or below the shooter. The left column of the ACI-H has the numerals laser-engraved representing the angle at with the device is canted. The right side has the cosine numerals laser-engraved. Because both are available, obtaining the angle to feed to an external program is just as simple as getting the cosine measurement directly. This provides the best of both worlds, and a fallback in case one method fails. The ACI-H is water-resistant, quiet, and made from anodized flat-black aircraft-grade aluminum. The lens is shatterproof, shockproof, and resistant to acetone, cleaning solvents, and other chemicals. Because the device is completely mechanical, there are no batteries or electronics which can fail or expend their supply of power! Angle Cosine Indicator - Hunter ACI-H