Precision Measuring Instruments (PMI)

9 Modules

PMI-1 An overview of micro-measuring

At the end of this module the Learner will be able to:

• State the importance of careful measuring
• State the need for careful measuring
• Describe the standard method of expressing dimensions.

PMI-2 Using & reading outside micrometers

At the end of this module the Learner will be able to:

• Name the parts and functions of typical micrometers
• Demonstrate the methods of holding and “feeling”
• Describe principles of reading the Main Scale
• Describe principles of reading the Thimble Scale
• Obtain an overall or combined reading
• Demonstrate the principles of maintaining Micrometers.

PMI-3 Using & reading outside micrometers over 25mm

At the end of this module the Learner will be able to:

• Identify fixed types of Micrometers up to 100 mm
• Describe the ranges of reading with fixed types
• Check accuracy using a settling gauge
• Identify contents of adjustable micrometer kits
• Describe adjusting standards
• Use and read adjustable type micrometers.

PMI-4 Using & reading inside micrometers

At the end of this module the Learner will be able to:

• Describe typical applications
• Name the micrometer parts and functions
• Describe measuring ranges
• Demonstrate techniques of usage
• Check accuracy
• Read the instrument

PMI-5 Using & reading micrometer depth gauge

At the end of this module the Learner will be able to:

• Describe typical applications
• Name the parts and functions of a typical depth micrometer
• Change extension rods
• Demonstrate handling / using techniques
• Read the instrument.

PMI-6 Using & reading vernier callipers

At the end of this module the Learner will be able to:

• Describe typical functions
• Name the parts and functions of a typical Vernier calliper
• Describe handling methods
• Gauge external, internal and depth reading
• Read the instrument.

PMI-7 Using & reading dial gauge callipers

At the end of this module the Learner will be able to:

• Describe the typical functions
• Name the parts and functions of a typical dial gauge calliper
• Describe handling methods
• Gauge external, internal and depth reading
• Read the instrument.

PMI-8 Imperial micrometers (Available on Request)

At the end of this module the Learner will be able to:

• Use and read external micrometers of the “imperial” - inch system.

PMI- 9 Using & reading a "Dial Test Indicator” or DTI.

At the end of this module the Learner will be able to:

• Describe parts and functions of a typical Dial Test Indicator
• Read a typical Dial Test Indicator (for example, 10 mm range, calibrated scale 0,01 mm)
• Set up a magnetic base / Dial Test Indicator support
• Use a Dial Test Indicator to establish lateral run-out to within 0,01 mm on a gear / sprocket facing