Arken Optics Zulus ZHD520R: Menus, zeroing and updating

Arken Optics Zulus ZHD520R: Menus, zeroing and updating firmware

#Arken #Optics #Zulus #ZHD520R #Menus #zeroing #updating

“RussDouglas 222”

Thanks very much to Arken Optics, for the opportunity to review their excellent new range-topping ZHD520R. So that’s …

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