MicroXact was founded as a Semiconductor and MEMS machining and prototyping facility. MicroXact's specializes in custom dicing and machining of both standard and exotic materials. The customer base ranges from university labs and start-up companies to government labs and Fortune 100 corporations. The firm is working on the development of a combined electromagnet/superconducting magnet cryogenic prober for testing spintronic devices over wide temperature ranges at multidimensional magnetic fields up to 5 tesla (a unit of magnetic induction equal to one weber per square meter). The solution will provide accurate, fast and reliable EMI and radiation immune temperature mapping of superconducting cavities with very high sensor density at a low cost per sensing point, using a machine that boasts ease of calibration, installation and use.