Ring eliminates reflections and controls white round target
Ring (with stainless lugs) controls light through the sight and enables varying degrees of brightness
10 - 90 % light absorption via the twin polarisers
Can be used as an iris only - or with one, or both, polarisers
Easy clean instructions are included
Much shorter and adjustable over a wider range of 0.5 - 3.0mm
The fixed-seat iris works with individually pin-located tempered spring steel leaves
The aim-point is precisely maintained through the wider range of adjustment by the introduction of a new system of aperture control, which is operated by varying the pressure of a steel tube against the central aiming ring - this guarantees a perfect circle at any point within the scale of adjustment.
Light reflection is kept to a minimum by external and internal matt finishes
Gehmann patented so not available from any other manufacturers` irises
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