Thursday Morning Riddle

I’m to straighten a picture that’s hung in a frame;
A particular stage of a video game;
I’m a tool to ensure that all heights are the same;
And I’m pointing a weapon to take steady aim.

Who am I?

UPDATE: Riddle solved by Asher. See comments for answer.

3 Responses to “Thursday Morning Riddle”

  1. Asher Says:

    Level

  2. Trish Says:

    A level.

  3. Bill Says:

    LEVEL is correct. Way to go, Asher (and Trish)!

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