The 70NBC/FBC comes with battery illumination.The Silva 70NBC/FBC is a compass for yachtsmen relying on exceptional stability in all conditions.The cone-shaped, no-spin compass rose is virtually unaffected by boat speed or engine vibration. The 70NBC/FBC Compass has a main steering scale on the horizontal part and direct reading on the vertical edge, making it ideal for boats with a sitting as well as a standing helmsman. The integrated illumination in the adjustable protection cover makes night navigation easier. The built-in compensator allows you to adjust the compass if it is disturbed by a magnetic deviation.Silva 70NBC/FBC Compasses come with two different mounting options that makes it possible to mount the compass in a bracket at multiple angles or as flush/bulkhead at any angle.FeaturesDeviation compensator so that you always can keep a steady courseMulti-mounting: Bracket that allows multiple mounting optionsFloats if dropped in waterComes with battery illuminationSpecificationsArticle number37168-0151Accuracy 0,5 (8.9 mils)Apparent card diameter70mm (2.7 inch)Built-in compensatorYesCard typeConeCompatibilityPower boatsDimensions102x110x70mm (bracket), 132x110x57 (Flush/bulkhead)Gimballed cradleNoHeeling angleRoll: 30 Pitch: 30Illumination12V., RedLubber linesCentreMaterialABS, AcrylicMountingBracket, Flush/bulkheadMounting angle-30 to +110Protective coverYesTemperature operating range-10C to +70CVariantMagnetic Equator, Magnetic South, Magnetic NorthWeight535g (with bracket), 614g (Flush/bulkhead)