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ASVAB · Measuring and Marking

Which tool would you use to check whether a corner or joint is at a true 90-degree angle?

Reviewed by Jordan Morley, Editorial Lead at 247SimpleTests. Written by the 247SimpleTests Editorial Team from the official source material cited on every question.

Correct answer

A square

  1. A A tape measure
  2. B A square
  3. C A level
  4. D A plumb bob

Why this is the answer

A square (such as a carpenter's square, try square, or combination square) is used to check and mark right angles, confirming that a corner or joint is a true 90 degrees. A level checks whether a surface is horizontal (level) or vertical (plumb); a tape measure measures length; and a plumb bob uses gravity to establish a vertical line. Matching the measuring/marking tool to the task — a square for checking 90-degree angles — is standard Shop Information content. Accurate squaring is essential for joints, framing, and layout work.
Source: ASVAB SI, Squares and Angles

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About this topic: Measuring and Marking

Measuring and marking questions cover rulers, tape measures, calipers, micrometers, squares and levels, including reading fractions of an inch and checking that something is square, level or plumb. This is one of 10 Shop Information questions on measuring and marking, each with a full explanation on a single study page.

New to this exam? Our ASVAB exam guide explains the format, scoring, and how to prepare.

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