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Calibrating the calibrators

By: Language: English Series: Surveying World ; 1(1) November 1992, 37-39(2)Publication details: 1992Subject(s): Summary: Quality assurance requirements and an awareness of the need for calibration and testing of EDM instruments has led to several initiatives. One is the establishment by Thames Water of an 8-pillar calibration baseline at Ashford Common, which has been accredited by NAMAS. The RICS working group recommended that the `Thames` Baseline should be measured using the 2-colour Terra Technology Terrameter EDM instrument (LDM-2). A grant from the RICS Education Trust enabled the only Terrameter in Europe to be brought from CERN. The project is here described.

Quality assurance requirements and an awareness of the need for calibration and testing of EDM instruments has led to several initiatives. One is the establishment by Thames Water of an 8-pillar calibration baseline at Ashford Common, which has been accredited by NAMAS. The RICS working group recommended that the `Thames` Baseline should be measured using the 2-colour Terra Technology Terrameter EDM instrument (LDM-2). A grant from the RICS Education Trust enabled the only Terrameter in Europe to be brought from CERN. The project is here described.