Mini prism with the diameter of 25,4 mm is used in completion survey. A metal holder and plastic frame prove high quality of the product and ensure a long-term use. A double-sided, rotating prism with constants: 0 and -30 mm allows the prism to be tilted to any angle. The pack includes a mini prism with a level, an S hook mount for plumb bob hanging, a short mounting adaptor with a precision point and a protective carrying bag. The product is very useful for precise measurements when every millimeter counts.