Tritium Compass – Hand Bearing

Tritium Compass – Hand Bearing

The Plastimo Iris 50 Hand Bearing Compass, enhanced with Betalight illumination, offers two illumination options: a continuous Betalight source for preserving night vision, or a photoluminescent/glow-in-the-dark backplate. The compass features a prism that eliminates parallax errors by projecting the reading to infinity, and a wide 20° field of view for optimal bearing conditions. Available in various colors, the Iris 50 is supported by a 5-year warranty.

 

Features

  • Dual-use: Hand bearing and traditional compass
  • No batteries, bulbs, parts, or switches: Maintenance-free operation
  • Optimized performance: For accurate reading and bearings
  • Neck cord: For easy deployment
  • Protection: Good against hard knocks, smooth finish that doesn’t slip even when wet
  • Legibility: Outstanding card readability with one-degree graduations
  • Accuracy: Pivot and hard stone ensure long life and shock resistance
  • Bottom cell: Soft, ultrasonic welding to prevent bubbles and leaks
  • Illumination: Built-in tritium, maintenance-free, corrosion-resistant, operates without batteries, lifetime >15 years
  • Reading method: Course reading from above the compass without using the prism

Specifications

Operation Temperature Range -20°C to +60°C
Water Resistance Up to 50 meters depth
Available Colors Army green, desert/sand, blue, yellow, orange
Field of View 20°
Casing Material Smooth, non-slip finish, ergonomic design
Accuracy One-degree graduations, no parallax error
Dimensions Standard dimensions not specified
Weight Standard weight not specified
Warranty 5 years
Protection Features Shock-resistant, prevents bubbles and leaks, corrosion-resistant, durable pivot and stone
Calibration Northern Hemisphere standard

Illumination Options

  • Betalights®: Fixed securely within the unit, using gaseous tritium activation of phosphor in a sealed glass tube, providing a reliable light source with a service life of 10 years. Maintenance-free with no moving parts.
  • Photoluminescent/Glow-in-the-Dark Backplate: Requires no electrical power supply, charged in ambient lighting conditions, gradually reducing in brightness over 60 minutes.
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