This is a companion app for performing high precision coaxility measurements of machine tools, typically between two opposing workhead spindles or a workhead spindle and a tool holder. The app guides the user through the complete measurement and evaluation process when using the high precision MEAX transmitter/detector sensors SM 201 and SR 201. Together, this simplifies the otherwise cumbersome and time consuming task to ensure that workhead spindle and tools are perfectly aligned, or to quickl