39 Questions
EASY What is the purpose of adding the thimble division to the first two measurements?
To find the total measurement in millimeters
Why should a micrometer be handled with care?
To reduce the risk of damage to its fine parts
What is the recommended way to store a micrometer?
In its proper case
What is the main use of feeler gauges?
To check bearing clearances and gear play
How should feeler gauges be maintained?
By keeping them clean and applying a thin coat of oil occasionally
What is the primary purpose of measuring tools?
To determine the dimensions of an object
What type of measurement tool is used for coarse measurements?
Steel scale or tape
How should a steel scale be stored?
So that other tools will not damage it
What can cause corrosion on a steel scale?
Fingerprints
What is the purpose of the power rewind mechanism in steel tapes?
To control the rate of rewinding
What is the maximum distance that the working parts of a micrometer can move?
25 mm
What is the purpose of the ratchet stop in a micrometer?
To prevent over-tightening
How should the distance on a micrometer be read?
By reading the major divisions first
MEDIUM What is the main advantage of using a micrometer over a steel scale?
It provides more accurate measurements
Why should a steel tape be rewound slowly?
To avoid damaging the tape
What is the purpose of the anvil on a micrometer?
To provide a reference point for measurements
What is the unit of measurement for a steel scale?
Millimetres and sixteenths of an inch
How should a steel scale be maintained?
By wiping it with light oil
What is the maximum range of a 200 mm micrometer?
175 mm to 200 mm
Why should a micrometer be handled with care?
To prevent damage to the working parts
What is the primary function of the sleeve or barrel on a micrometer?
To hold the thimble
What is the unit of measurement for the major barrel divisions in a micrometer?
Millimeters
What is the primary purpose of keeping a micrometer away from dirt, grit, grease, and moisture?
To prevent corrosion
What is the purpose of applying a thin coat of oil to the leaves of feeler gauges?
To prevent rust
What is the total measurement obtained from the micrometer reading?
17.51 mm
What is the unit of measurement for the thimble divisions in a micrometer?
Millimeters
HARD What is the primary reason for keeping a micrometer away from dirt, grit, grease, and moisture?
To prevent damage to the fine parts
What is the primary function of the leaves in feeler gauges?
To measure narrow slots and gaps
What is the unit of measurement for the minor barrel divisions in a micrometer?
Millimeters
What is the purpose of controlling the rate of rewinding a steel tape?
To prevent damage to the tape
What is the purpose of occasionally applying a thin coat of oil to the leaves of feeler gauges?
To prevent corrosion
What is the function of the spindle in a micrometer?
To move the thimble along the sleeve
What is the total measurement obtained from the micrometer reading?
17.51 mm
Why should a steel scale be wiped with light oil?
To remove fingerprints that cause corrosion
What is the primary advantage of using a micrometer over a steel scale?
More accurate measurements
What is the purpose of the frame in a micrometer?
To protect the working parts from damage
Why should a micrometer be handled with care?
To prevent damage to the working parts
What is the unit of measurement for the minor divisions on a micrometer?
Hundredths of a millimeter
What is the primary reason for storing a steel scale in a protective case?
To prevent damage from other tools
Study Notes
Measuring Tools
- Measuring tools are used to determine the dimensions of an object
- Coarse measurements can be made using a steel scale or tape
- Fine measurements require a micrometer or vernier caliper
Steel Scales and Tapes
- A steel scale is a flat metal ruler with edges calibrated in millimeters and sixteenths of an inch
- Measurements must be taken perpendicular to the surface to avoid inaccuracy
- Steel scales should be stored carefully to avoid damage and wiped with light oil to prevent corrosion from fingerprints
Steel Tapes
- Most steel tapes have a power rewind mechanism built into them
- Damage can occur if rewound too quickly
- Controlling the rewinding rate by guiding the tape with your free hand can prevent damage
Micrometers
- Micrometers are used for precise measurements with a fine degree of precision and minimal error
- Micrometers come in various sizes (25 mm to 300 mm) but can only move 25 mm
- Different types of micrometers include outside, inside, screw thread, and depth micrometers
Micrometer Parts
- Main parts of a micrometer include the frame, anvil, spindle, sleeve or barrel, thimble, and ratchet stop
Reading a Micrometer
- Read the major barrel divisions first, then add minor divisions and thimble divisions for an accurate measurement
- Example: 17.51 mm (17.0 mm + 0.50 mm + 0.01 mm)
Caring for Micrometers
- Micrometers should be handled with care to avoid damage from drops or exposure to dirt, grit, grease, and moisture
- Store micrometers in their proper case and apply a thin coat of oil occasionally to protect from corrosion
Feeler Gauges
- Feeler gauges, or thickness gauges, are used to check bearing clearances, gear play, and measure narrow slots and gaps
- They are also used to check spark plug gaps and tappet valve clearances
- Keep feeler gauges clean and occasionally apply a thin coat of oil to the leaves
Measuring Tools
- Measuring tools are used to determine the dimensions of an object
- Coarse measurements can be made using a steel scale or tape
- Fine measurements require a micrometer or vernier caliper
Steel Scales and Tapes
- A steel scale is a flat metal ruler with edges calibrated in millimeters and sixteenths of an inch
- Measurements must be taken perpendicular to the surface to avoid inaccuracy
- Steel scales should be stored carefully to avoid damage and wiped with light oil to prevent corrosion from fingerprints
Steel Tapes
- Most steel tapes have a power rewind mechanism built into them
- Damage can occur if rewound too quickly
- Controlling the rewinding rate by guiding the tape with your free hand can prevent damage
Micrometers
- Micrometers are used for precise measurements with a fine degree of precision and minimal error
- Micrometers come in various sizes (25 mm to 300 mm) but can only move 25 mm
- Different types of micrometers include outside, inside, screw thread, and depth micrometers
Micrometer Parts
- Main parts of a micrometer include the frame, anvil, spindle, sleeve or barrel, thimble, and ratchet stop
Reading a Micrometer
- Read the major barrel divisions first, then add minor divisions and thimble divisions for an accurate measurement
- Example: 17.51 mm (17.0 mm + 0.50 mm + 0.01 mm)
Caring for Micrometers
- Micrometers should be handled with care to avoid damage from drops or exposure to dirt, grit, grease, and moisture
- Store micrometers in their proper case and apply a thin coat of oil occasionally to protect from corrosion
Feeler Gauges
- Feeler gauges, or thickness gauges, are used to check bearing clearances, gear play, and measure narrow slots and gaps
- They are also used to check spark plug gaps and tappet valve clearances
- Keep feeler gauges clean and occasionally apply a thin coat of oil to the leaves
Measuring Tools
- Measuring tools are used to determine the dimensions of an object
- Coarse measurements can be made using a steel scale or tape
- Fine measurements require a micrometer or vernier caliper
Steel Scales and Tapes
- A steel scale is a flat metal ruler with edges calibrated in millimeters and sixteenths of an inch
- Measurements must be taken perpendicular to the surface to avoid inaccuracy
- Steel scales should be stored carefully to avoid damage and wiped with light oil to prevent corrosion from fingerprints
Steel Tapes
- Most steel tapes have a power rewind mechanism built into them
- Damage can occur if rewound too quickly
- Controlling the rewinding rate by guiding the tape with your free hand can prevent damage
Micrometers
- Micrometers are used for precise measurements with a fine degree of precision and minimal error
- Micrometers come in various sizes (25 mm to 300 mm) but can only move 25 mm
- Different types of micrometers include outside, inside, screw thread, and depth micrometers
Micrometer Parts
- Main parts of a micrometer include the frame, anvil, spindle, sleeve or barrel, thimble, and ratchet stop
Reading a Micrometer
- Read the major barrel divisions first, then add minor divisions and thimble divisions for an accurate measurement
- Example: 17.51 mm (17.0 mm + 0.50 mm + 0.01 mm)
Caring for Micrometers
- Micrometers should be handled with care to avoid damage from drops or exposure to dirt, grit, grease, and moisture
- Store micrometers in their proper case and apply a thin coat of oil occasionally to protect from corrosion
Feeler Gauges
- Feeler gauges, or thickness gauges, are used to check bearing clearances, gear play, and measure narrow slots and gaps
- They are also used to check spark plug gaps and tappet valve clearances
- Keep feeler gauges clean and occasionally apply a thin coat of oil to the leaves
This quiz covers the different types of measuring tools, their uses, and how to obtain accurate measurements. It includes steel scales, tapes, micrometers, and vernier calipers.
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