My company in the wall thickness detection in using ultrasonic thickness gauge after will use other gauges such as caliper and micrometer is verified, and ultrasonic thickness gauge before testing will be calibrated again, in the use of ultrasonic thickness gauge performance is very stable, error within the acceptable range, measurement results with other measuring consistent, so there has been no attention to inconsistencies in the ultrasonic probe and the operation manual, it is recommended.
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