Metric Thickness Calibration Block Designed for precise ultrasonic thickness gauge calibration across metric measurement ranges. Made from 1018 Stainless Steel Crafted from 1018 stainless steel for excellent wear resistance and acoustic consistency. Precision Ground for Reliable Readings Block is machined to tight tolerances, ensuring accurate and repeatable thickness measurements. and Inspection Use for flaw detection, sensitivity checks, and beam profiling in industrial ultrasonic testing. Conforms to Industry Standards Manufactured to meet and specifications for professional calibration and testing environments.