Throughout history, the Touchstone was used to determine the quality and value of precious metal bearing ores.
Beginning in 1990, Touchstone Calibration continued this tradition, in the modern world, by using laser technology to determine the accuracy of your Coordinate Measuring Machine or machine tool. Our mission then and continues to be to provide a service center previously unavailable. With over 50 years of combined experience,
Touchstone Calibration has been well received by CMM and Machine Tool users, proving to be a popular choice today!
A fine-grained stone used in assaying precious metals; hence, any test or criterion by which the qualities of a thing can be recognized or measured.