Measuring 3D Objects with Calipers

What is the main advantage of using a dial caliper over a ruler for measuring objects?

• It is cheaper than a ruler.

• It provides more accurate measurements.

• It is easier to use.

• It is more colorful.

What does the dial on a dial caliper help you measure?

• The color of the object.

• The weight of the object.

• Smaller increments for more precision.

• The temperature of the object.

In Figure 1, what measurement is the dial caliper showing if the reference edge crosses the beam at 0.5 and the dial reads 12?

• 0.62

• 0.512

• 0.612

• 0.52

Which part of the dial caliper is used to measure the outside diameter of an object?

• Internal jaws

• External jaws

• Measuring rod

• Dial

What should you do if your measurements differ from another student group's measurements?

• Ignore the differences.

• Retake the measurements to find errors.

• Argue with the other group.

• Change your measurements to match theirs.

What is the role of a metrologist?

• Designing new types of rulers.

• Performing precision measurements and calibrations.

• Teaching math in schools.

• Writing novels.

What should you ignore when measuring objects made from linking cubes?

• The color of the cubes.

• The holes and connectors.

• The weight of the cubes.

• The size of the cubes.

What is the purpose of dimensioning a sketch?

• To make it look pretty.

• To communicate the measurements and features of an object.

• To confuse the reader.

• To add color to the sketch.

Which of the following is NOT a task performed by metrologists?

• Calibrating precision equipment.

• Maintaining laboratory measuring systems.

• Writing fiction books.

• Supporting designers in product development.

What is the first step in using a dial caliper to measure an object?

• Guess the measurement.

• Set up and zero the caliper.

• Measure the object's weight.

• Paint the object.