Rusan Q-R adapter M52x0.75 for Ø63 mm (ARM52-63)

What it is and what it is for
The Rusan ARM52-63 is a clamp-style adapter intended to attach night-vision and thermal devices featuring an M52x0.75 thread to the objective or ocular of optics that use an outer ring sized 63 mm. It provides a mechanical interface between the device's M52 thread and a 63 mm external mounting ring.

Key characteristics
This unit is the ARM52 family variant with device thread M52 x 0.75 and an outer clamping diameter of 63 mm (ARM52-63). The indicated weight for ARM52 sizes is 0.164 kg. The upper part (which houses the NV/thermal device) is made of high-grade aluminium alloy; other mounting components may use high-quality steel with a black oxide finish. The adapter is of a conventional clamp design for secure mechanical attachment.

Compatibility
The ARM52 series is suitable for a range of devices; listed examples include models such as Liemke Luchs 1 & 2, Liemke Merlin 35, Night Pearl Seer, Cono Seer, Leica Calonox 2, Guide TAxxx, Burris BTC, JSA, Nitehog Viper, Steiner Nighthunter C35 and Lahoux Clip 35 & 50.