Micrometer Screw Gauge Measurements

The video tutorial explains how to use a micrometer screw gauge to measure small distances with precision. It covers the concept of least count, which is the smallest measurement a device can accurately read. The tutorial demonstrates measuring the diameter of a sphere and a wire, detailing the steps and calculations involved. It emphasizes the importance of precision and how to correct for any errors in the micrometer screw gauge.

What is the least count of the micrometer screw gauge discussed in the video?

• 0.05 mm

• 0.1 mm

• 0.01 mm

• 0.02 mm

How is the smallest division on the micrometer screw gauge defined?

• 0.5 mm

• 0.05 mm

• 0.1 mm

• 1 mm

What is the total number of divisions on the circular scale of the micrometer?

• 40

• 55

• 45

• 50

What should you do when you hear the sound while measuring with the micrometer?

• Increase pressure

• Decrease pressure

• Stop rotating

• Continue rotating

What is the main scale reading when measuring the sphere's diameter?

• 16 mm

• 16.5 mm

• 15 mm

• 15.5 mm

How do you correct an error in the micrometer screw gauge reading?

• Subtract a constant

• Use a correction factor

• Add a constant

• Add or subtract a correction

What is the main scale reading when measuring the wire's diameter?

• 0.5 mm

• 1 mm

• 1.5 mm

• 2 mm

What is the circular scale reading when measuring the wire's diameter?

• 21

• 23

• 20

• 22

What is the final diameter of the wire measured in the video?

• 1.26 mm

• 1.24 mm

• 1.22 mm

• 1.20 mm

What is the purpose of the ratchet in the micrometer screw gauge?

• To decrease pressure

• To lock the spindle

• To increase pressure

• To ensure consistent pressure