Iris 50 handbearing compass

An iconic product in the Plastimo range, the Iris 50 is the highly dependable companion of yachtsmen, regatta addicts and top-notch racers worldwide.
Handbearing and traditional compass : regularly praised by technical press and prestigious skippers alike, as the most reliable, sturdy and handy handbearing compass.

Shockproof, waterproof and sandproof : initially designed for regatta racing, it is also a precise and precious companion when trekking or hiking. 

  • ISO_613
  • NAV_N_GAR5_ANS_G_11445__


Model Colour Ref. Balanced for
IRIS 50 Blue 63870 Zone A-B
IRIS 50 Yellow 63871 Zone A-B
IRIS 50 Army green 63873 Zone A-B
IRIS 50 Orange 63599 Zone A-B
IRIS 50 Sand 63603 Zone A-B
IRIS 50 Blue 21809 Zone C
IRIS 50 Yellow 24049 Zone C
IRIS 50 Army green 38181 Zone C
IRIS 50 Orange 63600 Zone C
IRIS 50 Sand 63604 Zone C

Zone A-B : North Hemisphere, South Atlantic, Indian Ocean, Central Pacific, Tahiti, Reunion Island.
Zone C : South Pacific, Central & South Australia, New Zealand, New Caledonia.


• Two functions : handbearing and traditional compass.
• Graduation : every 1°.
• Field of view : 20°.
• Clearance : ±12°.
• Built-in photoluminescent lighting.
• Red lubber lines.
• Weight : 105 g.

Handbearing and traditional compass

Good protection against hard knocks : the smooth finish feels soft in your hand, and it will not slip, even if it is wet.

Outstanding legibility of the card, with one-degree graduations.

No parallax error : a prism projects the reading of the bearing to infinity. This also contributes to a more comfortable operation, as you do not need to alternate close-reading to read the card and infinite-reading to take bearings.

Optimum conditions to take bearings, thanks to the superb card stability and the wide 20° field of view, which will accommodate the roughest sea conditions.

Most accurate bearing : the pivot and very hard stone are a guarantee of long life and shock resistance of your compass.

Soft bottom cell : engineered using ultra-sonic welding, it acts like an expansion diaphragm, preventing the formation of bubbles and leaks.

Built-in photoluminescent lighting, completely maintenance-free, impervious to corrosion, operates without batteries or radio-active tritium.

Course reading from above the compass : you can read your compass like a standard compass, with no need to look through the prism.

Military and field compass applications : Army green (ref. 63873) and Sand (63603) models are available on special request with MILS graduation. 

Graduation in MILS + MILS :
. Direct reading every 400 MIL
. Reading through prism every 200 MIL.

Built-in photoluminescent lighting, completely maintenance-free, impervious to corrosion, operates without batteries or radio-active tritium.

Technical documentation & diagrams

In the press


"This is the Plastimo classic and still scores highest in our test. It's simple, robust and well designed, with everything encased in rubber, except for the lens and the top of the card. (...). The acrylic lens gives the clearest and most accurate read-out, while its position on top of the compass allows you to line up the bold red lubber line directly against the landmark you're taking a bearing on. Stows away easily thanks to its lightweight and small size."


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