Magnifying Glass
A compact magnifying glass or Fresnel lens used in survival gear for starting fires with sunlight, often credit card-sized for easy carry in wallets or pockets.
Estimated value as of 2026 · Source: Average from survival gear retailers like Survival Gear US, TruePrepper (Carson/…
Fun Fact
Fresnel lens versions weigh just 0.1 oz and provide 4x magnification, doubling as a reading aid while fitting unnoticed in an EDC kit.
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