1. Accurate Calibration: The Block Gauge is designed for ultrasonic thickness gauge calibration, ensuring precise measurements for your testing needs. 2. Easy To Use: Convenient and easy to operate. 3. Material: Crafted from high-quality 1018 steel, the Block Gauge provides long-lasting durability and reliability for all your calibration requirements. 4. Compact Size: With dimensions of 100x20mm, the Block Gauge is compact and easy to handle, making it good for both field and lab use. 5. Versatile Application: This Block Gauge is essential for ensuring accurate thickness and linearity calibration, making it a must-have tool for professionals in various industries.