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 |