SPECS: Dimensions: 4 x 2.5 x 0.6 in. | 10.16 x 6.3 x 1.5 cm Weight: 3.2 oz | 91 g Resolution: 1deg DESIGN & DETAILS: This mirrored baseplate compass offers professional features like an internal vial inclinometer and lid inclinometer that is ideal for advanced navigation, snow-safety, search & rescue, or scientific field work TruArc(TM) Global Needle tilts up to 20deg for balanced use worldwide Tool-free declination adjustment is simple and fast to orient magnetic north to true north Meridian lines on vial assist during pre-trip planning when aligning with map grid lines Brunton EverNorth Magnet resists demagnetization over time Inch/millimeter scales for accurate and effective map work Magnified readout provides highest degree of accuracy without compromising readability Sighting mirror and sighting line integrated into the cover Dual azimuth ring includes reverse azimuth Align for the most accurate bearings, whether taking or following a bearing Clinometer with 2deg resolution for measuring slope angle or gauging heights of passes, peaks or trees Engineer's ruler Bubble level for absolute precision readings; keeping the compass level (not the needle level) is a critical aspect for taking an accurate bearings Map magnifier helps with the smaller details on any map High visibility cling for enhanced performance in low light; can be removed to facilitate map use High visibility cling for enhanced performance in low light; can be removed to facilitate map use 1deg resolution azimuth ring provides accurate readings Made in the USA in Rivertown, WV