Having dimensions of the order of a micrometre(adjective)
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Use "micrometric" in a sentence
"In general, this ecoregion has mesothermic conditions with average annual temperatures of 24 – 12°C between 800 – 2,500 meters (m) altitude, and micrometric conditions with average annual temperatures of less than 12°C above 2,500 m."
"Eddington and his crew measured the stronger of the two images immediately, placing it in a micrometric measuring machine with the comparison photograph taken in January, film-to-film, to ascertain the displacement, if any."
"You see all those angles, calculated with micrometric precision."