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: Use a digital caliper to measure the distance between the center of one pin and the center of the next. Common pitches include 1.25mm (PicoBlade) , 3.0mm (Micro-Fit) , and 4.2mm (Mini-Fit Jr.) .

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: Check for chamfered (angled) edges or specific locking tabs that prevent incorrect insertion. 2. Common Molex Series and Specs : Use a digital caliper to measure the