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articles:auditing_7.1.5 [2024/06/23 10:10] – [1 - Micrometer Past its Calibration Due Date] rrandall | articles:auditing_7.1.5 [2024/07/09 08:54] (current) – [6 - Using a Precision Micrometer to calibrate Gage Blocks] rrandall |
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===== 6 - Using a Precision Micrometer to calibrate Gage Blocks ===== | ===== 6 - Using a Precision Micrometer to calibrate Gage Blocks ===== |
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__Situation__ Similar to the above scenario, but at a different company, you discover that the company is using a [[https://www.starrett.com/metrology/product-detail/W733.1XFL-1#Specifications|Starrett W733.1XFL-1 Wireless Electronic Micrometer]] to calibrate their class AS-2 Gage Block set (stainless steel, rectangular 0.010" to 2"). While the Starrett W733.1XFL-1 Micrometer Calibration certificate contains minimal information, you notice that it has a digital display with a resolution of 0.00005" (50 μin.). To verify that the Test Accuracy Ratio (T.A.R.) is sufficient, you see that the Gage Blocks Calibration Certificate indicates an accuracy of ±10 μin. (±0.00001"). | __Situation__ Similar to the above scenario, but at a different company, you discover that the company is using a [[https://www.starrett.com/details?cat-no=W733.1XFL-1|Starrett W733.1XFL-1 Wireless Electronic Micrometer]] & [[https://www.starrett.com/details?cat-no=W733.1XFLZ-2|Starrett W733.1XFLZ-2 Wireless Electronic Micrometer]] a to calibrate their class AS-2 Gage Block set (stainless steel, rectangular 0.010" to 2"). While the Starrett W733.1XFL-1 Micrometer Calibration certificate contains minimal information, you notice that it has a digital display with a resolution of 0.00005" (50 μin.). To verify that the Test Accuracy Ratio (T.A.R.) is sufficient, you see that the Gage Blocks Calibration Certificate indicates an accuracy of ±10 μin. (±0.00001"). |
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