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section 2.2
vocab
19
Engineering
9th Grade
01/07/2009

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Term
aligned dimension
Definition
a type of dimensioning where all the numbers have to be aligned so they can be read from the bottom.
Term
ANSI standard
Definition
creates national standards for U.S. measurement
Term
ASME
Definition
a professional organization that creates codes
Term
Arrowheads
Definition
used to indicate end of line or dimension
Term
baseline dimensioning
Definition
type of dimensioning where all dimensions are placed from a datum and not feature to feature
Term
Chain dimensioning
Definition
point to point dimensioning
Term
Datum
Definition
The origin from which the location, or geometric characteristic of a part feature is established.
Term
Dimension lines
Definition
lines that are thin lines capped with arrowheads
Term
Dual dimensions
Definition
Where two units are displayed in one dimension
Term
Extension lines
Definition
thin lines that show the extent of a dimension
Term
General Notes
Definition
notes that relate to the drawing
Term
Leaders
Definition
lines that connect a specific note to a feature
Term
Least Material Condition
Definition
smallest limit of external feature
Term
Limits of Dimensions
Definition
largest ans smallest possible dimensions allowed
Term
Local Notes
Definition
connected to a specific feature on the drawing
Term
Maximum Material Condition
Definition
largest size limit of external feature
Term
Nominal size
Definition
designation of size established for a commercial product
Term
Size dimension
Definition
placed directly on a feature
Term
Unidirectional Dimension
Definition
A dimensioning system which requires all numerals, figures, and notes to be lettered horizontally and be read from the bottom of the drawing sheet.
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