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Similar image: The product image shows different variations. Naturally, only one item will be sent.
To give maximum security and exactness, Orion Optics UK manufactures on their CNC milling machines, aluminium tube rings which are machined from solid pieces of aluminium and later black anodised to protect the surface which are felt lined to give a gentle but firm grip to the polished tubes.
Pressure adjustment is made by the large knurled knob on each tube ring to give precise amounts of friction on the tube outer surface.
