DIN EN ISO 18674-2:2017 Geotechnical investigation and testing - Geotechnical monitoring by field instrumentation - Part 2: Measurement of displacements along a line: Extensometers (ISO 18674-2:2016); German version EN ISO 18674-2:2016 has been changed from DIN 4107-2:2011 Geotechnical measurements - Part 2: Extensometer and convergence tape measurements.
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