Gehmann 530 Iris & Diopter

Description

* iris 0.5 – 3.0mm * 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 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 * light reflection is kept to a minimum by external and internal matt finishes * Gehmann patented so not available in other manufacturers` irises * laser engraved indications * 1.5x diopter with -4.5 to +4.5 correction * detachable diopter (needs 577) * black