As nouns the difference between metrology and metrologist
is that metrology is the science of weights and measures or of measurement while metrologist is one who studies or practices metrology.
metrology
English
Noun
(
wikipedia metrology)
(uncountable) The science of weights and measures or of measurement.
(countable) A system of weights and measures.
Related terms
* metric
* metrological
metrologist
English
Noun
(
en noun)
One who studies or practices metrology.
References
Random House College Dictionary