Features: The Circular Espresso Coffee grinds Size Chart provides visual comparison tool to help users quickly determine and adjust coffee grinds size for optimal brewing results. Crafted from stainless steel with an 8.5cm diameter, this circular reference card features clearly marked ranges (200 400μm for espresso, 800 1000μm for pouring over) and rotates for easy grinds comparisons. Ideal for both coffee brewing novices learning proper grinds techniques and professional baristas requiring precisions in commercial settings, this tool bridges skill levels. Use this essential coffee accessory during home brewing, professional cafés service, or coffee tasting event where accurate grinds calibration matters. Unlike paper reference cards, our stainless steel coffee grinds size chart offer superior durability against wear and coffee acids while maintaining clear visibility of all grinds specifications. Specifications: Component: Stainless Steel Color: Silver Diameter: Approx. 3.35inch(8.5cm) Package Includes: 1x Coffee Powder Measuring Ruler Or 2x Coffee Powder Measuring Ruler note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.