E-32EMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.• Measures Rectangular Gauge Blocks and Square Gauge Blocks (latter requires dedicated holder - optional accessory) by manual comparison with an appropriate reference gauge block in the size range 0.1 mm to 250 mm• Measuring method: Differential measurement between upper and lower gage heads (dual head system)Gauge Block Comparator GBCD-250 SERIES 565 — Manual Comparator with Dual Gage HeadsSPECIFICATIONSMetricRangeResolution (Effective indication)Accuracy Comparison measurement of thesame nominal lengthAccuracy Dimensional deviations betweenstandard gauge block andmeasurement gauge block: ±3 mm0.1 - 250 mm0.001 μm (0.01 μm)±(0.03 + 0.3L/1000) µm* L=Gauge block length (mm) ±(0.06 + 0.3L/1000) µm* L=Gauge block length (mm) Upper gaging head Lower gaging headOperating conditionsTypeMeasuring forceContact pointTypeMeasuring forceContact point Linear Gage0.4 NCarbide contact point of radius 20 mmLinear Gage0.2 NCarbide contact point of radius 5 mm20 °C±1 °C Humidity: 30% RH to 60% RH (Under less temperature change, and hot or cold direct air flow should be avoided.)* Uncertainty of measurement at the 95% condence level (not including the calibration error of the reference gauge block).An inspection certicate is supplied as standard. Refer to page U-9 for details.

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