Smoothness Tester based on Buick BEKK principle and compliant with ISO 5627/GB/T 456. Its touch-screen control and three test levels (I–III) simplify smoothness testing for paper/board. Fully automated, it ensures consistent results with minimal maintenance. Safety features like pressure relief and quiet operation (<50 dB) enhance usability. Ideal for paper mills and R&D labs, it’s a durable, future-ready solution for quality control.