Description: This voyager bracket mount compass is designed for showing directions of autos, boats, caravan truck and so on. Because of its mountable and portable advantages, it is very convenient to be installed on the car or boat. Furthermore, the compass can keep balance individually and read dials precisely. Come on, this compass is worth buying! Specifications: Main Material: ABS Color: Black/White(optional) Bottom Diameter: 6cm/2.36'' Size: 8 x 7.2cm/3.15'' x 2.83'' Package Weight: 100g Fitment: For Watercraft, Boat, Caravan and Truck 1 x Compass 1 x Magnetic Declination Adjustment Plectrum 1 x Gummed Paper 2 x Screws 1 x Manual Book 1. This compass is designed for car, boat or watercraft and the reading is totally opposite to normal compass. For example, when you are facing NORTH while the compass is placed in front of you, the reading shows "N" to you and "S" pointing north direction. The reading facing you is the correct direction that you are facing, that is "N". 2. Please allow 0~1inch error due to manual measurement. Thanks for your understanding.