Deck 42: Datum Targets

Question 1

The datum-target symbol contains the target area size (where applicable), the datum identifying letter, and the ______________________________.

Answer 1

target number

Question 2

Points, lines, and areas on datum features are designated on a drawing by means of a ____.

A) target symbol
B) datum symbol
C) datum-target symbol
D) basic dimension

Answer 2

C

Question 3

Dimensions locating target areas are ____________________ and are enclosed in a rectangular frame.

Answer 3

basic

Question 4

There are instances where it is acceptable to use only a portion of a feature as a datum feature.

Question 5

The symbol for a datum target point is ____.

A)
B)
C)
D)

Question 6

The symbol on an edge view of a surface tells you that the line is a _________________________.

Question 7

When the length of a datum target line must be controlled, its length and location are dimensioned.

Question 8

The symbol for a datum target line is ____.

A)
B)
C)
D)

Question 9

When targets are used for the primary datum, they must also be used for secondary and tertiary datums.

Question 10

For flat surfaces, ____ target points or areas are required for a primary datum.

A) one
B) two
C) three
D) four

Question 11

For greater accuracy, datum targets should be placed as far apart as possible.

Question 12

The datum-target symbol is approximately ____________________ times the height of lettering on the drawing.