Portable standards (for liquids and gas)
A portable standard (intermediary standard, traveling standard) – is a secondary standard, designed for comparison of measurement standards and calibration of measuring instruments (MI) which for one reason or another can not be directly compared with each other e.g. in case of international comparisons when standard’s transportation is required etc.
Portable standards are highly-accurate measuring instruments (complexes of measuring instruments) for transmitting size of physical units from primary standards to those being attested (tested) and having capacity of being transported directly to the application site of measuring instruments to be calibrated (attested).
