000			01095cab a2200229 4500
001			A167
008			090401t1992 xxu||||| |||| 00| 0 eng d
035			_a(Sirsi) u27408
041			_aeng
100			_aDodson, Alan
245			_aCalibrating the calibrators
260			_c1992
350			_a0
490			_aSurveying World _v1(1) November 1992, 37-39(2)
520			_aQuality 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.
650			_aCALIBRATION
650			_aEDM INSTRUMENTS
650			_aSURVEYING INSTRUMENTS
690			_aLAND SURVEYING
942			_n0
948			_c04/03/1997
999			_c18441 _d18441