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<p>"INSIZE" (Made in USA) Digital Surface Profile Gauge Roughness Meter Model 2843-10.<br> <br> Measure Peak to valley height of blast clean surface. If the profile is too low, the adhesion of the coating to the surface will be reduced.<br> <br> If the profile is too high there is the danger that the profile peaks will remain uncoated, allowing rust spots to occur.<br> <br> Meets ASTM D 4417-B<br> <br> Zero set block is included. Set zero before measurement<br> <br> Button function: On/Off, Zero/mm/inch<br> absolute/incremental measurement<br> <br> CR2032 Battery automatic power off<br> <br> Data output<br> <br> Stainless Steel Base<br> <br> Range : 0-12.7mm/0-0.5"<br> Digital Indicator Stroke: 12.7mm/0.5"<br> Digital Indicator Resolution: 0.001mm/0.00005"<br> Accuracy: ±0.005 mm</p>