How to read a Micrometer

What is the range of measurement for a micrometer?

• Only an inch

• Up to a foot

• Up to a meter

• Unlimited

What are the two main parts of a micrometer mentioned?

• Sleeve and Thimble

• Barrel and Lever

• Frame and Lock

• Anvil and Spindle

How much does one full revolution of the thimble measure?

• 10 thousandths of an inch

• 100 thousandths of an inch

• 50 thousandths of an inch

• 25 thousandths of an inch

What does the number on the thimble represent when aligned with the sleeve's line?

• Measurement in millimeters

• Measurement in inches

• Additional measurement in thousandths

• Base measurement

What is the significance of the lines and numbers that go around the back of the micrometer?

• They provide measurement four places past the decimal

• They are for decoration

• They indicate the micrometer's model number

• They are used for calibration

What is the measurement system used in most machine shops?

• Binary system

• Metric system

• Two places past the decimal

• Three places past the decimal

How is the fourth place past the decimal referred to in machine shop language?

• A millionth

• A thousandth

• A hundredth

• A tenth

What is the correct way to hold a micrometer?

• Hold it with both hands

• Use only your thumb and index finger

• Keep it on a flat surface

• Wrap your little finger around the frame

What does a friction thimble do?

• Changes the unit of measurement

• Locks the measurement in place

• Slips when measuring

• Adjusts the micrometer's calibration

How do you ensure you have the smallest measurement on a micrometer?

• Measure multiple times

• Move your workpiece around a bit

• Use a different measuring tool

• Guess the measurement