Home» Activity» Fundamentals of metrology» Base of Standards» Length» DETU 01-03-98

Reproduction, maintenance and transferring of the length unit to reference standard – interference installation, to secondary standards – lasers stabilized by frequency, grating length measures, working standards – end length measures, working end length measures of 00 and 01 classes and linear displacement meters from 0,01 mm to 1000 mm by means of comparison with the help of comparator, comparison measures and method of direct measurements – in accordance with DSTU 3741-98 “Metrology. National verification scheme for measuring instruments of length”.

Metrological characteristics
from 1⋅10-6 m до 1 m
Random error (RMS deviation)
2,5⋅10-11 m
Non-exceptional systematic error
1,2⋅10-11 m
Expanded uncertainty (U)
6⋅10-11 m