Unique twin needle display simultaneously shows and water pressure values, allowing easy parameter comparison and for both beginners and professional baristas Universally Compatibility: Features standard G1 / 8 connection for easy installation on most semi automatic espresso machines, offering easy setup as a replacement or upgrade part With its 60mm diameter face and streamlined design, this industrial gauge enhances your coffee machine ' s aesthetics while professional functionality The double needle pressure gauge accurately measures and water pressure in real time, ensuring perfect coffee extractions with precises 0-2.5bar and 0-16bar measurement ranges for optimal brewing control Made with robust iron and brass materials, this pressure gauge withstands high temperature environments while maintaining stable for long lasting reliability