Which tool is typically used for precise alignment of scope bases?

The alignment bar is specifically designed for the precise alignment of scope bases. It helps to ensure that the scope is mounted straight and true to the rifle, which is critical for achieving the desired accuracy when shooting. By using an alignment bar, a shooter can verify that both the front and rear bases of the scope are level and properly aligned, which helps in maintaining consistent point-of-impact during firing. This alignment is essential, as any misalignment can lead to substantial accuracy issues, causing the shots to deviate from the intended target.

While tools like a torque wrench, spirit level, and sighting tool have their own specific functions, they do not serve the primary purpose of aligning scope bases. A torque wrench is used to ensure that screws are tightened to the correct specifications, but it does not directly address alignment. A spirit level can help determine if a platform is level, but it does not provide the precise alignment needed for optical components. Similarly, a sighting tool is more focused on aiding in aiming rather than the accurate mounting and alignment of a scope. Therefore, the alignment bar is the best choice for ensuring that the scope bases are aligned perfectly for optimal shooting accuracy.