kaasaskantav okularist (suurendusklaasist) ning fookuspinnal asetsevast niidistikust, kujunditest ja skaalast koosnev optikamõõtevahend mõõtmiseks ja kontrollimiseks
optical device for measuring and inspection comprising a loupe and a reticle
It is used for: linear measurements in fractions, circular measurements in fractions, radius measurements, angle measurements, narrow line width measurements, and so on.
