Archer's Advantage Says
Sight In Using Chronograph and Two Sight Marks
Short range distance (10-60)
Sight mark at Range 1 (0-100)
Long range distance (20-100)
Sight mark at Range 2 (0-250)
Distance from bow to chronograph in yards (0 to 20).
Initial Speed will be calculated based on distance between Bow and Chronograph. (75-400 fps)