Metrological Traceability

Metrological Traceability
In order to comply with the requirements of ISO 17025, and to more accurately reflect the traceability of our standards, Masy is changing the wording “NIST traceable” to “traceable to the International System of Units (SI) through NIST or other National Measurement Institutes”. You may also see this written as “SI Traceable”. This is a wording...
SI Traceability Pyramid

In order to comply with the requirements of ISO 17025, and to more accurately reflect the traceability of our standards, Masy is changing the wording “NIST traceable” to “traceable to the International System of Units (SI) through NIST or other National Measurement Institutes”. You may also see this written as “SI Traceable”. This is a wording change only. Our processes remain the same, and Masy will remain a direct customer of NIST’s measurement services, with many of our primary reference standards hand-carried to NIST for calibration and direct traceability. We continue to offer the same superior calibrations, with the greatest accuracy and the lowest measurement uncertainties in the industry.

Source: masy.com