The Tangent Theta 3-15x50 scopes are high-performance sighting instruments designed for professional marksmen who require precision and accuracy at long ranges. These riflescopes are built with ruggedness in mind and have been optimized and refined by Tangent Theta's experienced development team to provide mechanical precision and superior image quality. The elevation and windage mechanisms of the scopes are precise and feature a TOOL-LESS RE-ZERO procedure, making it easy for the user to make adjustments without the need for any tools. Tangent Theta rifle scopes are built in Canada and undergo rigorous function testing to ensure long lifecycles in the harshest environmental conditions.