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Sir/ Ma'am, . How to read the dimension labels of this IC?enter image description here

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I have annotated your drawing a little to help you understand it better: enter image description here

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Values above the horizontal lines are in inches. Values below it are in mm.

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  • why there is an plus and negative sign? – Jehu Basa J-b Feb 22 '16 at 8:27
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    that is tolerance values, allowed variations in production (for instance). 0.060±0.005 is the range 0.055 to 0.065. – Mikael Patel Feb 22 '16 at 9:12

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