Well, last weekend, I had some spare time, so I thought I would find out just how to work this windgage front from prone position. Rifle set up on floor in cleaning vise, Me, behind rifle, in prone position. I must say, those old time gunmakers knew what they were about! By turning sight adjustment screw clockwise..as if threading screw to left..sight moves right, and by turning in counter clock wise..as if unscrewing towards right..sight moves left. Therefore, if bullet impact is off to left of center, by turning screw C.W., as if turning screw in direction of shot hole..sight moves to right..just remember to move screw in direction of bullet impact & sight will be moved in correct direction. I think with practice, i can estimate how much of a fraction of a turn to make without having to see graduations on sight front.