Document camera and overhead projector for large-screen projection display of technical documents, drawings, parts catalogs, and work instruction manuals at manufacturing sites. Used for defective product analysis in quality control meetings, actual product verification in improvement proposal presentations, parts explanation in technical education, and shared display of ISO documents. Capable of photographing drawings up to A3 size and three-dimensional objects, equipped with zoom, rotation, and freeze functions. Enables simultaneous confirmation by multiple people through connection to projectors or monitors. Features robust design adapted to manufacturing site environments with dust and vibration resistance specifications. Unlike simple web cameras or scanners, this is professional equipment specialized for real-time projection and high-resolution display.