Key benefits Precise, readytouse microscope accessory set with clearly defined dimensions for reliable fits and repeatable results. Compact 19 mm diameter components for easy compatibility with standard microscope stages and adapters. Gridbased options (C5, C6) provide reference measurements for quick onsite sizing and comparison. Several sizes available to match different equipment setups and measurement needs. Durable construction using quality materials to ensure longterm stability and reliability. Specifications (C components) C1: 25 x 75 x 1.5 mm, minimum 0.01 mm C2: Diameter 19 mm C3: Diameter 19 mm, minimum 0.1 mm C4: Diameter 19 mm, minimum 0.05 mm C5: Diameter 19 mm, Each small square is 0.25 mm squared C6: Diameter 19 mm, Each small square is 0.04 mm squared C7: Diameter 19 mm, minimum 0.1 mm Several sizes available Material and durability Made of quality materials to ensure durability and stability for longterm use. Use scenarios Calibration and alignment: Use the 19 mm diameter components to fit standard microscope adaptors for precise setup and repeatable measurements. Gridbased measurement tasks: Employ C5 or C6 with defined smallsquare scales to perform quick, onthespot size assessments of samples or features. Replacement and compatibility: Select from multiple sizes to match different microscope models and accessory kits, ensuring reliable fit and performance in routine work.