Easy to read 2" direct-reading dialHardened 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 lighting1-3/8" H x 2-9/16" W