The Sight Leveler

Invented by: Gene Lueck 

Leveling Instructions

First mount the Sight Leveler on a table near a corner so you can rotate the sight up and down without hitting the table. At this time you must adjust the tool by turning the screw jack on the left while holding a torpedo level on the mounting block until it is vertical.

Then attach your sight mount to the Leveler and put your sight on it with the sight extension parallel to the floor.

Slide the sight block up or down to leave room for the torpedo level against the vertical sight bar.
 

Loosen the screws that attach the sight bar to the extension. With the torpedo level on the side of the sight bar, adjust the bar until it is vertical. "DO NOT ADJUST THE SCREW JACK"

At this time check to see if the bubble level in your sight aperture is in the center. If you need to adjust this level, loosen the screws on the front of your sight and turn the aperture until the bubble is in the center.

Now that the level is centered while the sight is pointing horizontally we must check to see if the bubble is perpendicular to the sight bar. First point the sight upward at about a 30 degree angle and then downward at about 30 degrees. Note what the bubble does when you do that.

If your bubble moves from one side to the other when you point up and down it is NOT perpendicular to the sight bar. At this time you will need to change that. "DO NOT CHANGE THE SIGHT BLOCK SCREWS" This is the time when you need to utilize the 3rd axis of your sight. With the sight pointing upward 30 degrees, loosen the 3rd axis and move it until the bubble is in the center and tighten it down. Then point the sight downward and check it again. Since some bubble vials are not exactly perfect you may need to play with this test a bit to get the bubble to stay in the center through the entire 60 degree arc. This adjustment is extremely critical to up and down hill shooting.

An example of 3rd axis. A third axis is basically a hinge on the front of your sight extension that enables you to move your sight bar in a horizontal direction.

If your sight does not have a 3rd axis adjustment you will have several options.

1. Place a shim under one side of the sight block. To do that you will need to loosen the screws that hold your aperture level and place a metal or plastic shim vertically under one side or the other depending on which way you need to move the bubble.

2.Some sights will have an adjustment on the level bubble its self.

3.You can bend the screw but I wouldn't recommend that as it may cause the screw to fatigue and break.

4.You could buy a sight extension that has a 3rd axis.

Lets assume now that your bubble stays in the center all through the 60 degree arc. Remove the sight from the Leveler and attach it to your bow. Prepare to make a shot and draw the bow with your eyes closed. When you open your eyes at full draw the bubble should be in the center. If it is not, you need to adjust the cant(lean) of the sight bar so it is in the center. Remember that it is not necessary to line the sight up with the string, and it is not necessary to hold your bow straight up and down. Many of today’s bows, such as single cam bows, the string does not run through the center of the bow but at a slight angle. Comfort is the desired result. If you can draw and hold your bow and the bubble stays in the center without you having to fight to keep it there, you have the desired set up. Once you have achieved this there is still one thing you must check to assure proper alignment of your sight. Find a place where you can hold your bow in as vertical position as possible. A padded vice or something like that. Place an arrow on the string and across the arrow rest. Take a small carpenters square and set it against an area of your sight bar that is at right angles to your arrow path with the ruler part aligning with your arrow. Your arrow must be traveling perpendicular to your level bubble. There should be a flat spot on the front or back of your sight that you can use as a guide. If the arrow is not perfectly aligned with the square, you must shim your sight mount to make it that way. Place a metal or plastic shim under the front or back of the sight mount in a vertical position to achieve this alignment.  The other option now available is the Tek-Tech 4th Axis seen below.

The squaring of the arrow to the sight extension will work but is not absolute.  The Tek-Tech 4th Axis shown below will enable you to shoot in the arrow path alignment and assure perfect alignment of your 3rd axis to the arrow path.

Click on the picture to read about the 4th Axis!

If you have additional questions you may send me an e-mail at gene@archerytech.com

Thank you for your business!

Shoot well!

Gene Lueck