.decimal is committed to proton therapy and offers a wide range of products from custom patient specific devices to prepped blanks for in-house machining. Our patented Shell and Core design for apertures and range compensators can significantly reduce material cost for devices. We have proprietary software for CT-based range compensator QA, a much more thorough analysis than methods currently in use. And our Astroid Dosimetry Library can provide unprecedented access to TPS functions such as secondary dose verification, dose-based device design, etc.