What measuring instrument having two adjustable jaws typically used to measure distance or thickness?

What measuring instrument having two adjustable jaws typically used to measure distance or thickness?

• A. Ruler
• B. Calipers
• C. Tape measure
• D. Protractor

Answer: (B)

Calipers are designed to measure the distance between two points or the thickness of an object by bringing two adjustable jaws together around it. You open the jaws to fit the object, close them so they just touch, and read the measurement from the scale on the instrument. They offer precise external measurements with the larger jaws, internal measurements with the smaller jaws, and even depth measurements with a rods extending from the end. This versatility and precision set calipers apart from a ruler (which is just a fixed straight edge with marks), a tape measure (good for longer distances but not precise for small dimensions), and a protractor (which measures angles, not distances).

Calipers are designed to measure the distance between two points or the thickness of an object by bringing two adjustable jaws together around it. You open the jaws to fit the object, close them so they just touch, and read the measurement from the scale on the instrument. They offer precise external measurements with the larger jaws, internal measurements with the smaller jaws, and even depth measurements with a rods extending from the end. This versatility and precision set calipers apart from a ruler (which is just a fixed straight edge with marks), a tape measure (good for longer distances but not precise for small dimensions), and a protractor (which measures angles, not distances).