Turn on the machine and rotate the lens of the machine (inside the tube) to adjust the focus, and adjust the cross line of optical sight to be clear. Adjust the position of the connecting tube, and tighten the screws till the cross line in the centre of the display. And the commissioning of the machine is complete till now. In the future application, if the image is blurred caused by the different distances of the objects, the image clarity shall be adjusted by side focus roller (and the parallax adjustment roller) attached with the optical sight.
Do not move the machine lens, otherwise, the cross-line will be blurry. Type: RIFLE Function: Lens Model Number: FW54-YSY016 Colour: Black. The item "DIY Night Vision Scope Digital Camera For Rifle Scope With IR Torch & Monitor" is in sale since Wednesday, October 9, 2019. This item is in the category "Sporting Goods\Hunting\Night Vision". The seller is "livinginabox" and is located in Mainland.This item can be shipped worldwide.