6/2/2023 0 Comments J unertl scope serial numbersIf the sleeve does not move easily, the two screws may be binding slightly due to age and dried lubricant. To adjust the focus loosen one of the locking rings and tighten the other, moving the center sleeve. The two screws prevent the sleeve from rotating and connect the sleeve to a sliding housing inside the scope tube. The center sliding sleeve does not rotate, but slides fore and aft. One locking ring is usually marked off with a reference scale. The center (sliding sleeve) has separate locking rings on both ends. The next step is to bring the scope image into sharp focus at the intended shooting distance. Lock the eyepiece in place and proceed to focus the scope image. Now, prior to adjusting anything else, Its a good idea to loosen the eyepiece lock ring and, with the scope aimed at a moderately bright defused light source (the sky is great), adjust the eyepiece to optimize the image of the crosshairs. In the type of scopes this article discusses, crosshair reticles are by far the most common. There are post reticles, dot reticles, circular reticles, and many other forms of reticles. I tend to use the terms reticle and crosshair synonymously, but a crosshair is only one form of a reticle. Reticle Image Focus Adjustment First, allow me to clarify a bit of terminology. The photo below displays two examples of Fecker scopes with sliding Pope-style ribs.
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