Granite surface plates offer a smooth, flat reference plane for QA, inspection, metrology, and setup applications. Surface plates are offered in different standardized grades with more precise tolerances used for metrology while workshop-grade plates offer sufficient precision for most shop floor applications. Stands provide permanent stationary or mobile areas for surface plates, with or without added enclosed storage. Specially formulated surface plate cleaners avoid the potential abrasion or film deposition of non-dedicated stone cleaners. Cases and covers protect surface plates from particles, dirt and damage when not in use.