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 from other manufacturers' irises Laser engraved indications 1.5x diopter with -4.5 to +4.5 correction which is removable if required (needs 577 adaptor) Black

Iris 0.5 - 3.0mm, 501MC  1.5x diopter with -4.5 to +4.5 correction In an attractive, anti-reflective matt silver and blue finish Laser engraved indications Steel threaded connection - which for example enables the use of a diopter 5 external push-fit rubber rings which attach to the knurled ring in: Red, yellow, green, blue and black Designed to provide an illusory optical effect which ensures perfect eye alignment An extremely simple and inexpensive idea that gives an exceptional improvement Detachable diopter 50300MC (needs 577)

Iris 0.5 - 3.0mm 48 colour combinations but can be used without colours Can be used as single or twin banks of six colours: 1. bank: Yellow, dark green, orange, brown, light or dark grey 2. bank: Light blue, dark blue, lemon yellow, red, light green or lilac Colours from one ring can be mixed with the other to provide the remaining 36 colour options Can be used as an iris only 1.5x magnifyer with -4.5 to +4.5 diopter correction Detachable diopter (needs 577) Laser engraved serial number and notifications Supplied with 5 external push-fit coloured rings to assist in achieving constant eye position shot after shot Steel threaded connection Blue and silver Manual

Iris 0.5 - 3.0mm Can be used as single or twin banks of six colours: 1. bank: Yellow, dark green, orange, brown, light & dark grey 2. bank: Light blue, dark blue, lemon yellow, red, light green & lilac 48 colour combinations Twin polarisers 1.5x diopter with -4.5 to +4.5 diopter correction Can be used without colours or polarisers 5 external push-fit rubber rings Detachable diopter (needs 577) Laser engraved serial number and indications Easy clean instructions included Silver and blueManual

Iris 0.5 - 3.0mm Two polarisation filters: 1. ring eliminates reflections and controls white around target 2. 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 1.5x diopter with -4.5 to +4.5 correction Detachable optical system for use of thread adaptor such as 577 Easy clean instructions included Manual

Iris 0.5 - 3.0mm 1.5x diopter with -4.5 to +4.5 correction Detachable diopter (needs 577) Easy clean instructions included 6-colour filter: orange, light green, yellow, medium grey, dark grey and amethyst (purple) Can be used without colours Can be used as iris only Easy clean instructions included Black Manual

Iris 0.5 - 3.0mm  6-colour filter: orange, light green, yellow, medium grey, dark grey and amethyst (purple) Two polarisation filters (565) 1.5x magnifying with -4.5 to +4.5 diopter correction Can be used without colours or polarisers Detachable diopter (needs 577) Easy clean instructions included Manual