Precision Measurement Training

801-01 Introduction to Measuring and Care of Measuring Tools

When you complete this lesson, you will be able to explain the need for measuring tools in machining and maintenance operations. You will also be able to describe some of the precautions to take to properly care for these tools.

• Explain the need for both coarse and precision measurements
• Describe the proper care of:
• Simple calipers
• Rigid rules, folding rules, and tape measures
• Vernier calipers
• Telescoping gauges and micrometers
• Dial indicators and fixed gauges

801-02 Measuring Rules and Tapes

When you complete this lesson, you will be able to identify rigid rules, folding rules, depth rules, and tape measures; you will also be able to explain the correct procedures for taking accurate measurements with them.

• Identify a rigid rule and describe how to use it
• Identify a folding rule and describe how to use it
• Identify a depth rule and describe how to use it
• Explain the procedure for taking a measurement with a depth rule
• Identify a tape measure and explain how to use it

801-03 Micrometers

When you complete this lesson, you will be able to identify common micrometer types, identify their components, and correctly take readings using English, metric and Vernier micrometers.

• Identify common types of micrometers
• List the major components of micrometers
• Demonstrate how to take an accurate reading with an outside micrometer
• Explain how to properly read the scale on an English scale micrometer, a metric scale micrometer, and a Vernier micrometer
• Demonstrate how to take an accurate reading with an inside micrometer
• Demonstrate how to take an accurate reading with a depth micrometer

801-04 Fixed Gauges

When you complete this lesson, you will be able to describe the various types of fixed gauges commonly used by maintenance and machining technicians. You will also be able to explain the purpose of the various fixed gauges.

• Identify and describe the purpose of each of the following types of fixed gauges:
• Go NoGo gauge
• Plug gauge
• Thickness gauge
• Screw pitch gauge
• Small hole gauge
• Wire and sheet metal gauges

801-05 Measuring with Calipers

When you complete this lesson, you will be able to identify common types of calipers used in machining and maintenance work, and explain how to properly use them.

• Identify each of the following types of calipers, and describe their operation and use:
• Inside caliper
• Outside caliper
• Hermaphrodite caliper
• Transfer and direct reading calipers
• Slide calipers
• Vernier calipers
• Dial calipers
• Digital calipers

801-06 Dial Indicators

When you complete this lesson, you will be able to list the major components of dial indicators and demonstrate how to use the instrument to take an accurate reading. You will also be able to describe how to use a dial indicator to measure the run out of a rotating part, and how to align two shafts using a dial indicator.

• List the main components of a dial indicator
• Explain how to properly read a dial indicator
• Describe how to measure run out
• Demonstrate how to align rotating components
• Describe various types of indicators

801-07 Telescoping Gauges

When you complete this lesson, you will be able to describe the function and proper use of a telescoping gauge, and explain its care.

• Explain the function of a telescoping gauge
• Identify the gauge’s components
• Describe the procedure for obtaining accurate measurements
• Explain the proper care of a telescoping gauge