Made with robust iron and brass materials, this pressure gauge withstands high temperature environments while maintaining stable for long lasting reliability 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 With its 60mm diameter face and streamlined design, this industrial gauge enhances your coffee machine ' s aesthetics while professional functionality 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 / 8 connection for easy installation on most semi automatic espresso machines, offering easy setup as a replacement or upgrade part