features 1Metallic navigation instrument can be decorated for car boat RV etc. 2Fine and clear dial, easy to read scale. Hooking hole available with adjustable port 3High quality vacuum ion plating surface treatment for strong corrosion resistance 4The main material of the product is zinc alloy, some aluminum, plastic, copper and so on 5Each product is equipped with a shock-proof washer that reduces vibration after installation on the vehicle and reduces the impact on the accuracy of the movementFeatures: Metallic navigation instrument can be decorated for car boat RV etc. Fine and clear dial, easy to read scale. Hooking hole available with adjustable port. High quality vacuum ion plating surface treatment for strong corrosion resistance. The main material of the product is zinc alloy, some aluminum, plastic, copper and so on. Each product is equipped with a shock-proof washer that reduces vibration after installation on the vehicle and reduces the impact on the accuracy of the movement. Specifications: Name: Barometer, Clock, Temperature and Humidity Meter (optional) Material: Zinc Alloy + Aluminum + Plastic + Copper Color: Golden, Silver (optional)Product Range:20-100/ 0-30/ 20-100% 20-100/REL.Clock Face Diameter:6.2cm/2.4inBase Diameter:5.7cm/2.2inProduct Height:3.5cm/1.4inPackingSize: 11 x 5.3 x 11.2cm/4.3 x 2.1 x 4.4in Package List: 1 * Meter(Battery is not included) 10 *Screws .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }