The Silva 100BC Compass comes calibrated for Northern Hemisphere countries.The 100BC Compass has a main steering scale on the horizontal part of the compass rose and direct reading on the vertical edge. This makes the compass ideal for boats with a sitting as well as a standing helmsman. The integrated illumination makes night navigation easier. The built-in compensator allows you to adjust the compass if it is disturbed by a magnetic deviation.FeaturesBuilt-in compensator: Deviation compensator so that you always can keep a steady courseDouble scales: Can be read from front and aboveCurved lubber lines: Accurate reading from different anglesSilva 100BC comes with built-in illumination: enables night navigationSpecificationsArticle number37177-0151Accuracy 0,5 (8.9 mils)Apparent card diameter100mmBuilt-in compensatorYesCard typeConeCompatibilityPower boatsDimensions125 x 145 mmGimballed cradleNoHeeling angleRoll: 30 Pitch: 30Heeling angle scaleYesIllumination12V, RedLubber linesCentre (front and back) and side view at 45MaterialAcrylic/ABSMemory ringNoMountingBracketMounting angle-30 to +110Protective coverNoTemperature operating range-10C to +70CVariantMagnetic NorthWeight910g