Chun ( trainee) asked me why we need to do EDM calibaration on today. I told him that in Malaysia cadastra work, every 6 months the instrument involved in cadastra work is compulsory to do the EDM calibaration. If we do not carry out the test, we are unable to submit the cadastra work for that particular period. EDM Calibaration is vital to ensure that the EDM for the instrument is in good condition where the distance should not exceed 10mm compared with the original distance at the calibaration pillar.
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