Digital Vacuum Gauge 52mm DC 12V for Car Truck 0-30 IN.HG with Pointer Display Features： 1、Efficient Monitoring: By monitoring the vacuum level, the 52mm vacuum gauge ensures optimal engine performance, optimizes fuel combustion, and improves fuel efficiency. 2、Early Detection: By monitoring vacuum changes, the car digital gauge can help detect and identify potential issues, enabling timely repair and maintenance. 3、Smooth Operations: Maintaining the correct vacuum level with this gauge helps the engine run more smoothly, reducing vibrations and noise for improved driving comfort. 4、High Durability: Made from high grade ABS materials, sturdy and strong, not easy to crack and damage, ensuring reliability and long lasting life for prolonged use. 5、Easy Installation: The gauge is extremely easy to install, with the whole process completing in just a few minutes. Suitable for all DC12V circuit systems vehicles. Specification： Item Type: Vacuum Gauge (0-30 IN.HG) Design: Pointer + Digital Material: ABS Diameter: Approx. 52mm / 2in Voltage: DC 10-15V Fitment: for all vehicles with DC12V electrical systems Package List： 1 x Vacuum Gauge 3 x Connecting Accessories 1 x Wiring Harness 1 x User Manual