Use this illuminator to make the crosshair reticle in your finderscope eyepiece more visible at night. This illuminator will screw into any reticle eyepiece to provide you with a variable brightness red illumination on your crosshair. Vary the brightness to suit your preference. Knurled aluminum brightness knob and batteries included. Uses two standard GPA76 batteries.
Connection thread size is M8 x 0.75mm pitch.
It is easy to replace the batteries:
1. Grasp the elluminator as shown below. Unthread the two sides.
2. Remove the batteries and replace facing the same way as those you removed. See the image below.
