The Rusan adapter is used to connect a daylight optic to the Hikmicro Thunder TE19/ TH35/TQ50 thermal imaging accessory.
To determine the proper diameter to mount the Rusan adapter, the outer diameter of the optic must be measured with a tolerance of 0.5 millimeters. Ideally, use a gauge for this purpose.
If you are not sure, contact our team, specifying your optics (brand, model).
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