The Silva Kayak 58 compass is perfect for kayaking or any other small vessels. The compass itself is a liquid filled compass specially designed for marine navigation for accurate readings and a special strap with hooks that can fit this compass onto any kayak deck with bungy cord (comes supplied).FeaturesLightweight: No need to carry unnecessary weightWaterproof: Withstands tough weather conditionsSteady mounting: Keeps in place, even in rough conditionsSpecificationsArticle number36528-0751Accuracy 1 (17.8 mils)Apparent card diameter55mmBuilt-in compensatorNoCard typeConeCompatibilityKayaksDimensions85x55x72mmGimballed cradleNoHeeling angleRoll: 20 Pitch: 20Heeling angle scaleNoIlluminationNoLubber linesCentreMaterialABS, AcrylicMemory ringNoMountingRubber strapsMounting angle-10 to +10Protective coverNoTemperature operating range-10C to +70CType of compassSteering compassVariantMagnetic NorthWater resistanceWaterproofWeight115g