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The circles, squares, bars, and other geometries on the micrometer are designed to be used for calibration and verification of measurement systems. Table lists the individual characteristics of the eight test plates featured. Also features a 2.5" linear scale for larger scale calibrations or measurements, labeled every 0.5". Each plate is accurate to within ±2 micron of the stated dimension. Glass slide dimensions: 1"W x 3"L x 1.5mm T. Large circle at the right of the slide is 0.5" dia. Test Plates 1-4 correspond to top patterns and 5-8 to bottom patterns, all left to right. Patterns 1, 2 and 8 are calibrated on NIST certified version of micrometers.
|1||4600 x 3500μm||Circles with diameters 2000μm, 1000μm, 500μm, 250μm|
|2||1000 x 800μm||Circles with diameters 500μm, 250μm, 125μm, 62.5μm|
|3||1000 x 800μm||7 BARS (200μm x 20μm) separated by 30°|
|4||1000 x 800μm||Various circles, doughnuts, and HEX shapes|
|5||4000 x 3200μm||Squares of 100μm, 40μm, 20μm, (2 sets)|
|6||2050 x 1650μm||Grid with 50μm holes and walls|
|7||4200 x 3400μm||Grid with 200μm holes and walls|
|8||10000μm long||SCALE (micrometer) 10μm|