4BE3 U5 C1 Obj 3 EMH

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.