What are the common symbols for dimension?
Primary Dimension | Symbol | BG unit |
---|---|---|
length | L (sometimes l) | ft (foot) |
time | t (sometimes T) | s (second) |
temperature | T (sometimes q ) | oR (degree Rankine) |
electric current | I (sometimes i) | A (ampere) |
What are the different types of dimensioning?
5. Types of Dimensioning
- Chain Dimensioning.
- Parallel Dimensioning.
- Combined Dimensioning.
- Progressive Dimensioning.
- Dimensioning by Co-ordinates.
- Equidistant Dimensioning.
- Repeated Dimensions.
What are the two types of dimensioning?
The basic types of dimensioning are linear, radial, angular, ordinate, and arc length. Use the DIM command to create dimensions automatically according to the object type that you want to dimension.
Which should never be used as a dimension line?
An outline or a centre line should be used as a dimension line. Explanation: An outline or a centre line should never be used as a dimension line.
Which is the best example of dimensioning the cylinder?
Basic Dimensioning Skills Activity 2
A | B |
---|---|
Which is the BEST example of dimensioning the cylinder below?, | A |
Dimensioning shown could be improved by:, | Not having gaps where the center lines cross the visible lines. |
Which general rule for dimensioning is violated?, | Avoid dimensioning to hidden features. |
What is the most important rule for dimensioning?
Drafting I – Dimensioning rules
Question | Answer |
---|---|
When a hole does NOT go fully through the object, you must state its size and: | Depth |
Avoid dimensioning to: | Hidden lines |
The MOST important rule in dimensioning is to: | Maintain clarity |
The size of an ARC is typically specified by its: | Radius |
Which is the best placement of the dimension?
006.02 Basic Dimensioning Skills Activity
A | B |
---|---|
Which is the BEST example of dimensioning the object?, | A |
Which is the BEST placement of the dimension?, | B |
What is the size and quantity of the smallest sized hole(s)?, | Ø5, 12 |
What is the size of the largest sized hole?, | Ø10 |
What is the difference between dimension lines and extension lines?
Dimension Lines – show the direction and extent of the numerical size. They are thin lines and terminate with an arrowhead at each end. Extension Lines – are used to extend a surface or a point beyond the outline of the object so that a numerical size can be related to that surface.
Is it okay to dimension hidden lines?
Dimensioning to hidden lines should be avoided wherever possible. Use auxiliary cross sectional views instead. Longer dimensions should be placed outside all intermediate dimensions so that dimension lines will not cross extension lines.
Can dimension lines cross?
Dimension lines and extension lines should not cross, if avoidable. However, extension lines may cross each other. 23. When extension lines cross other extension lines or visible object lines, no break in either line should be made.
What are leader lines?
A leader line is a line that establishes a connection between a graphical representation of an item and some text. A leader line also has a terminator and some text. A leader line may have a reference line under the text.
What is the difference between a size dimension and a location dimension?
Size dimensions describe the size of each geometric feature. Location dimensions show the location of each geometric feature within an object or view. Location dimensions tell the viewer where edges occur inside an object view.
Why do designers need to fully dimension a part?
Designers need to fully dimension a part to provide the width, height, and depth so the person that is manufacturing the sketch doesn’t dimension it wrong. When a sketch is over dimensioned, it just simply has repeated dimensions on the sketch.
In what order do you list dimensions?
Listed dimensions are always inside dimensions.
- The first dimension to measure is length. Length is always the longest side of the box that has a flap.
- The next dimension is width. The width side also has a flap, but is always the side shorter than the length.
- Measure the height of the package.