Question: what is 2nd axis on a bow sight?
Answer: 2nd and 3rd Axis Sight Adjustment. 2nd Axis: 2nd axis adjustment is simply leveling the sight bubble to the bow riser, string, and. limbs when the bow is positioned vertically plum. This can be done by clamping the bow in a bow vise using a level, or holding limbs against a level door frame or wall.