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Easy to read 2" direct-reading dial Hardened steel pivot and Sapphire jewel movementBuilt-in roller diaphragm for extended temperature operating rangeInternational Safety Yellow caseSilicon impact resistant case with neck lanyardCompact size for easy handling and storageQuickSight V-notch and lubber line for easy heading alignmentNon-electric chem sticks provide 18 hours of night lighting