Specialized measuring instruments for precision measurement of thickness of sheet materials, films, coatings, and plating using non-contact or contact methods. Employs measurement principles including ultrasonic, eddy current, magnetic, and optical methods, used for sheet thickness management of metal processed products, coating film thickness inspection, and quality control of resin films. Features a wide lineup from dial gauge type to digital display type, essential measuring instruments for non-destructive testing and quality assurance in manufacturing sites. Specialized for thickness measurement of thin films and large workpieces that are difficult to measure with calipers or micrometers, widely utilized in manufacturing processes of automotive parts, electronic components, and building materials.