Plastimo Iris 50 Hand Bearing Compass


Betalight provides the plastimo Iris 50 handbearing compass with illumination. There are two options for illumination; 1. provided by a continuous and secure light source (betalight) that preserves night-vision and enables readings to be taken quickly in partial and total darkness. Parallax errors are eliminated by a prism that projects the reading of the bearing to infinity. A wide 20° field of view ensures optimised conditions for taking bearings and red lubber lines make reading quick and easy. 2. illumination is provided by photoluminescent/glow in the dark backplate. The Iris 50 handbearing compass is supported by a 5 year warranty.


  • Long Service Life
  • Supported by a 5 year warranty
  • Absolutely reliable Betalight light source
  • No Parallax errors, no bubbles or leaks
  • Dual-use hand bearing and traditional compass
  • No batteries, bulbs, spares or switches
  • Smooth, non-slip casing and ergonomic design
  • Neck cord for easy deployment
  • Optimised performance for reading and bearings
  • Operation temperature from -20 °C to +60 °C and underwater to a depth of 50 metres
  • Available in army green, desert/sand, blue, yellow and orange


  • Good protection against hard knocks: the smooth finish is soft to the touch and will not slip, even when 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 there is no 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° fi eld 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 the compass
  • Soft bottom cell: engineered using ultrasonic welding, it acts like an expansion diaphragm, preventing the formation of bubbles and leaks
  • Built-in tritium illumination, completely maintenance-free, impervious to corrosion, operates without batteries and a lifetime of more than 15 years
  • Course reading from above the compass: readings can be taken in the standard fashion, without having to look through the prism


Illumination of the Plastimo handeheld compass is self-powered, requiring no batteries, bulbs, switches or secondary light source. They are rated for operation in temperatures ranging from -20° to 60° and underwater to a depth of 50m. Note: compasses are calibrated for use in the Northern Hemisphere as standard.


There are two options;

1. Illumination is provided by Betalights® fixed securely within the unit. SRB Technologies is the original developer of Betalights®, innovative technology that uses gaseous tritium activation of phosphor within a sealed glass tube to produce light. Betalights® are self-powered, providing an absolutely reliable light source throughout their service life of 10 years. They contain no moving parts and are maintenance-free:

2. Illuminatiuon is provided by a photoluminescent/glow in the dark backplate, therefore, needing no external or internal electrical power supply. The photo luminescent backplate is charged in ambient lighting conditions. The photo luminescent compass backplate will gradually reduce in brightness over a period of 60 minutes.


Diameter : 83 mm
Height : 33 mm
Weight : 105 g

Colour: Plastimo handheld is available in army green, desert/sand, blue, yellow and orange
Scale: mills or degrees
Illumination: Betalights or photoluminescent/glow in the dark:


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Betalight b.v.
Hoge Eng West 28
3882 TR Putten (Netherlands)

Phone: 0031 341 36 0111

NAMSA registration code 4000049917
D.U.N.S. No.416901775

V.A.T. No. NL801345728B01
Chambre of Commerce: 08056517