part 1-section 1 lines unit 4 extension lines and dimension lines
TRANSCRIPT
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Part 1-Section 1 Lines
Unit 4 Extension Lines And Dimension Lines
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• Extension Lines– Used in dimensioning to show size
– Thin, dark, solid lines
– Extend away from object
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Example Application
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• Dimension Lines– Size descriptions
• Fractional
• Decimal
• Metric
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• Dimension Lines– Thin lines
– Broken at dimension
– Ends in arrowheads
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• Dimension Lines– Arrow size determined by
• Dimension line thickness• Drawing size
– Prefer closed arrowhead
– Projects 1/16 beyond dimension line
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Angle Brace (BP-4A)
Print Reading Assignment-Unit 4
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1. Name the material specified for the Angle Brace.
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2. What is the overall length of the brace from left to right?
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3. What is the overall height from the top of the brace to the bottom?
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4. What is the width of each leg of the brace?
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5. What is the thickness of the metal in the Brace?
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6. What is the name given to the kind of line marked , and ?A B C
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7. What kind of lines are and ?D E
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8. What kind of lines are and ?F G
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9. Why are object lines made thicker than extension lines and dimension lines?
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Corner Plate (BP-4B)
Print Reading Assignment-Unit 4
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1. What kind of line is ?A
NOTE:
DIA. = DIAMETER
R = RADIUS
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2. What kind of line is ?B
NOTE:
DIA. = DIAMETER
R = RADIUS
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3. What kind of line is ?C
NOTE:
DIA. = DIAMETER
R = RADIUS
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4. Determine the overall length of the Plate from left to right.
NOTE:
DIA. = DIAMETER
R = RADIUS
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5. Determine the overall height of the Plate from top to bottom.
NOTE:
DIA. = DIAMETER
R = RADIUS
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6. Give the center distance between the two upper holes.
NOTE:
DIA. = DIAMETER
R = RADIUS
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7. Determine distance .D
NOTE:
DIA. = DIAMETER
R = RADIUS
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9. What kind of line is ?F
NOTE:
DIA. = DIAMETER
R = RADIUS
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10. What radius forms the rounded corner of the Plate?
NOTE:
DIA. = DIAMETER
R = RADIUS
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11. Name the materials specified for the Plate.
NOTE:
DIA. = DIAMETER
R = RADIUS
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12. How many Corner Plates are required?
NOTE:
DIA. = DIAMETER
R = RADIUS