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From:Wllllams Tank Lines 209 944 0134 05/19/2015 15:00 #560 P.012/013 <br /> Calibration Report <br /> Device under test: <br /> Thickness Gage Model: EHC-09DL-CW S/N: 05053577 <br /> Software Version: V3,5 <br /> Items used for calibration <br /> RECEIVED' <br /> Transducer Model: DK-537 EE <br /> Transducer S/N: 66723 MAY 19 2015 <br /> Certified Step Block Model/Description: 0.100" to 0.500° Steel Block ENVIRONMENTA <br /> Serial Number: A27830 HFA1TPnPP4QTAACAIT <br /> Velocity(through step block): 0.2359in/us <br /> Calibration Data <br /> Test Nominal Step block Measured Measurement <br /> No. Thickness Tolerance Thickness Error <br /> Inches in in in <br /> 1 0.100 ±0.001 0.100 0.000 <br /> 2 0.200 ±0.001 0.200 0.000 <br /> 3 0.300 ±0.001 0.300 0.000 <br /> 4 0.400 ±0.001 0.400 0.000 <br /> 5 0.500 ±0.001 0.500 0.000 <br /> Calibration Results <br /> The above data certifies that the gauge passed the manufacturer's specification for <br /> accuracy (+/- 0.004") under the specified conditions. <br /> Tested and Certified by: Gary Reeves <br /> Certified Steel Tank Institute Level II <br /> SP001 # 11111 <br /> Certified Ultrasonic Thickness Tester Level III (UTT) NDT-UT#0001 <br /> Signature: �,eS Date: May 5, 2015 <br />