Write the sentence correctly. This device which is called a counting scale tell you how much small items are in a pile

This device which is called a counting scale, tells you how much small items are in a pile.

third person

explanation:

note the usage of names and pronouns, "james" & "the old man". this alone can confirm it as third person, as first person uses "i" and the like, while second person uses "you" and the like.

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