Deck 4: General Dimensioning Symbols

Question 1

The symbol for a reference dimension is a set of parentheses.

Answer 1

True

Question 2

A(n) ____________________ is a radius that generates a segment of a sphere.

Answer 2

spherical radius

Question 3

How is the spherical symbol used on engineering drawings?

Answer 3

The spherical diameter symbol is used two different ways on engineering drawings. One use is to indicate that a dimension applies to a spherical shape. The second use is to indicate a spherical tolerance zone.

Question 4

The counterbore symbol indicates the min size of the flat on a flat-bottomed diameter.

Question 5

The general dimensioning symbol for radius is a(n) ____________________.

Question 6

The ____________________ may also be used to indicate the depth of a hole, counterbore, or spotface.

Question 7

The countersink symbol denotes the shape of geometry on a part.

Question 8

The tolerance zone for a(n) ____________________ is the same as the tolerance zone for a radius.

Question 9

Explain the dimension origin symbol.

Question 10

The ____________________ is used to indicate that a dimension applies to the length and width of a square shape.

Question 11

Where a radius is specified, the part surface may have flats and reversals, as long as the arc surface is located within the tolerance zone.

Question 12

How is the diameter symbol used on engineering drawings?

Question 13

The model coordinate system symbol is optional on CAD models, but is required on orthographic views of an engineering drawing.

Question 14

Explain the maximum and minimum dimension symbols.

Question 15

Define a model coordinate system.