Question:

The instrument used for testing flatness of surface, marking parallel lines and also for marking and testing of right angles is

Show Hint

Try square is used for checking and marking right angles in workshop practice.
  • Straight edge
  • Try square
  • Mortise gauge
  • Calipers
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The Correct Option is B

Solution and Explanation

Concept:
A try square is a marking and testing tool used in carpentry and fitting work.

Step 1:
It is used to check whether two surfaces are at right angles.

Step 2:
It can also be used for marking right-angle lines on a workpiece.

Step 3:
It helps in marking parallel lines with proper reference.

Step 4:
It can also assist in checking flatness and squareness of surfaces.

Step 5:
Hence, the correct answer is try square. \[ \boxed{\text{Try square}} \]
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