Measuring Tools: Vernier and Micrometer

What is the main purpose of a vernier caliper?

• To calculate the weight of objects.

• The main purpose of a vernier caliper is to provide accurate measurements of length and depth.

• To determine the volume of liquids.

• To measure temperature accurately.

How do you read the measurement on a vernier scale?

• Only read the vernier scale without considering the main scale.

• Read the main scale value and add the aligned vernier scale value.

• Subtract the vernier scale value from the main scale value.

• Multiply the main scale value by the vernier scale value.

What is the least count of a standard vernier caliper?

• 1 mm

• 0.1 mm

• 0.02 mm

• 0.5 mm

Describe the parts of a micrometer screw.

• Shell, rod, scale, grip, and pointer

• Base, lever, dial, pointer, and knob

• The parts of a micrometer screw are the frame, anvil, spindle, thimble, and scale.

• Body, cap, gauge, handle, and indicator

How do you take a measurement using a micrometer screw?

• Use a micrometer screw to measure the thickness or diameter of an object accurately.

• Use a caliper for rough measurements.

• Estimate the size by eye.

• Measure using a ruler for precision.

What is the least count of a micrometer screw?

• 0.001 mm

• 1 mm

• 0.01 mm

• 0.1 mm

Explain the difference between inside and outside measurements with a micrometer.

• Inside measurements are taken with a ruler, while outside measurements are taken with a tape measure.

• Both inside and outside measurements use the same jaws for all dimensions.

• Inside measurements use internal jaws for internal dimensions, while outside measurements use external jaws for external dimensions.

• Inside measurements are used for external dimensions, while outside measurements are for internal dimensions.

What is the significance of the thimble in a micrometer screw?

• The thimble is used to hold the micrometer in place.

• The thimble allows for precise adjustments and accurate readings in a micrometer screw.

• The thimble is primarily for aesthetic purposes.

• The thimble serves as a handle for the micrometer.

How do you ensure accuracy when using a vernier caliper?

• Ignore the zero reading before measuring

• Use only the main scale for measurements

• Ensure the zero reading is correct, use the appropriate scale, and take multiple measurements.

• Rely on a single measurement for accuracy

What are some common applications of vernier calipers and micrometers?

• Determining electrical resistance in engineering

• Measuring temperature in scientific experiments

• Common applications include measuring dimensions in engineering, manufacturing, and scientific research.

• Calculating weight in manufacturing processes