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The term "operating margin" refers to the amount of profit you have for each $1 in sales after deducting all expenses other than interest and taxes. In the following video, Fool.com analyst Isaac Pino sheds light on what this means for the everyday investor, both in reading an income statement and in relation to other margins and figures.

Operating margin can be especially useful in evaluating a company such as 3M(NYSE:MMM)

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