1. scale of measurement of the resistance () on the bottom of this scale is glazed to resolve any discrepancies in the reading because the รัลแลกซ์
2. scale of measurement of the potential difference direct current (DCV) and amount of direct current (DCA) black
3.The scale of measurement of the AC voltage (ACV) has a red
4. scales measure the expansion of direct current transistor (hFE) have blue
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