
Advanced Series 178 Portable Surface Roughness Tester for Precision Measurement. Ultra-high vertical discernment up to 0.2 nm for ultra-precision surface detection. Detector with full 360 micron travel, supports comprehensive contour and roughness testing. All-in-one measurement for roughness, contour curve, step height and waviness. Built-in probe locking mechanism to fix detector and avoid measurement deviation. Ergonomic handheld design with smooth buttons, reduce fatigue during long-hour testing. Fully sealed main unit & probe core, resist metal dust and cutting fluid intrusion. High-hardness cemented carbide stylus, wear-resistant with stable long-term data. Equipped with original factory inspection certificate, pass official metrology verification. Widely applicable for machinery, mold, auto, aerospace precision workpiece inspection. Dustproof anti-fluid structure effectively prevents sensor jamming and extends service life.