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The transferring of the size of unit of length to standards and working means of measuring equipment (dashed measures of length) by a method of direct measurements.

The transferring of the unit of measurement is carried out by the interference method using the radiation of a stabilized helium-neon laser.

Metrological characteristics

Range

from 1⋅10-6 m to 2⋅10-1 m

Extended uncertainty of dashed length measures (U)

from 2⋅10-8 m to 6⋅10-8 m