This is the most common thread-type mounting standard on night vision and thermal clip-on devices. Dedal was the first company to use the M52x0.75 thread for clip-on mounting purposes. Many renowned adapter manufacturers have an adapter for this mounting standard in their offer – these are often designed to fit directly onto the thread without the use of an additional reduction ring (converter). These adapters can be paired with reduction rings (converters) to fit other common clip-on mounting standards. All the clip-ons that feature this mounting standard are front-mounted, meaning that they are mounted on the riflescope’s objective.
Dedal mounting standard (M52x0.75) on Jahnke DJ8 1x48
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With Smartclip, Rusan, Recknagel, and Präzise Jagen adapters you need to choose the size based on the outer objective diameter of the riflescope.
Our list of riflescopes and their outer objective diameters is available here
Our article with all the mounting standards on NV and thermal clip-on devices is available here