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A Davis Instruments UV light sensor measures the intensity of ultraviolet light in the 280-360 nanometer range
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Celestial Navigation - SKU 132 2026 new price and customize your dataA simplified, yet complete Celestial Navigation system. Includes everything you need: sextant use and corrections, starfinder for 18 stars, data entry form, and step by step sight reduction and plotting procedures. May be scored and separated; large portion fits in the sextant case for quick reference, and small part acts as a waterproof data reduction card. Measures 8 11 inches (22 28 cm). Highlights Click here to learn more about the product. A