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#3 on this list
TruArc 15
Brunton
Global needle with a rare-earth magnet and a clinometer, built around a genuinely tough housing.
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- How we assessed it
- Specification researched

#4 on this list
3H Tritium Lensatic
Cammenga
The military lensatic: tritium-lit, induction damped, and rated for temperature extremes.
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Specs side by side
| Spec | TruArc 15 | 3H Tritium Lensatic |
|---|---|---|
| Needle System | TruArc Global, Rare-Earth Magnet | — |
| Key Feature | Clinometer | — |
| Baseplate Material | Durable Polymer | — |
| Overall Weight | Moderate | — |
| Origin | USA | — |
| Type | — | Lensatic (Military-spec) |
| Illumination | — | Tritium (Self-powered) |
| Damping | — | Induction (Fluid-free) |
| Housing | — | Cast aluminum |
| Weight | — | Approx. 6.5 oz |
| Temperature Rating | — | Extreme range |
What our reviewers liked and didn't
TruArc 15
- Strong, quick magnet
- Global balance
- Good sighting notch
- Heavier
- Mirror clarity is average
3H Tritium Lensatic
- Glows without charging
- Extremely rugged
- Excellent for night bearings
- Poor for map plotting
- Heavy
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