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ERA-TAC Angle Cosine Indicator (ACI) with bubble level
The Angle Cosine Indicator (ACI) is an indispensable
sniper tool for long distance precision shots when aiming
up- or downhill. The ACI helps you to easily calculate
and correct the gravity‘s effect on your bullet‘s
The bubble level enables the shooter to understand if
the gun is completely level. Our ERATAC® mount with
ACI and bubble level can be easily attached to our
UNIVERSAL-interface. It is not necessary to alter the
position of the scope. The position of the ACI is such
that the red needle is visible even when using a scope
with the illumination control on the left side and while
already aiming. The Mil-Spec. version is waterproof for
35 min. and 1 meter depth of water.
The position of the elevation turret remains always
visible because of the lateral bubble level.

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