Question 1

When specifying datum targets on a drawing, explain why the datum targets may indicate fixed or movable datum feature simulators.

Accepted Answer

Datum feature simulators are fixed if their datum target location is defined with basic dimensions in all directions. Datum target simulators are movable if their datum target location is not defined with basic dimensions in all directions.
Where basic dimensions are not used to define a datum target in a direction on the drawing, the datum target simulator is movable. Unless otherwise specified, the direction of movement is normal to the part surface. The movable datum target symbol is not required, but it may be shown on a drawing for clarity.
If it is desired to have the direction of movement of a datum feature simulator not normal to the part surface, then the movable target symbol and the direction of movement must both be specified on the drawing.

Question 2

Where a datum target line or area is indicated on a non-planar surface, a flat-tipped gauge element is often used as the datum feature simulator.

Accepted Answer

A) True 
 B)False  False

Question 3

A(n) ____________________ is a designated area used in establishing a datum.

Accepted Answer

datum target area
datum target

Question 4

A(n) ____________________ gauge pin is often used as the datum feature simulator for a datum target point.

Accepted Answer

The answer of A(n) ____________________ gauge pin is often used...

Question 5

What are the three different ways a datum target line symbol may be specified on a drawing?

Accepted Answer

A datum target line symbol may be specif

Question 6

Datum targets cannot be used to establish a simulated datum from a feature of size.

Accepted Answer

A) True 
 B)False

Question 7

Datum targets should be specified on parts where it is not practical (or possible) to use an entire surface as a datum feature.

Accepted Answer

A) True 
 B)False

Question 8

Datum targets can be used to establish a simulated datum from irregular surfaces.

Accepted Answer

A) True 
 B)False

Question 9

Where datum target points are used to establish a primary datum from a planar surface, ____________________ target points are used.

Accepted Answer

The answer of Where datum target points are used to...

Question 10

The symbol for a datum target point is a(n) ____________________-shaped symbol.

Accepted Answer

The answer of The symbol for a datum target point...

Question 11

What does a pointed end on the datum target symbol indicate?

Accepted Answer

Where a pointed end is shown o

Question 12

Datum targets are shown on an engineering drawing and describe datum feature ____________________.

Accepted Answer

The answer of Datum targets are shown on an engineering...

Question 13

The side of a gauge pin is often used as the datum feature simulator for a datum target line.

Accepted Answer

A) True 
 B)False

Question 14

When using datum targets to establish a complete datum reference frame, which three requirements should be met?

Accepted Answer

When using datum targets to establish a

Question 15

What are the two types of symbols included in a datum target application?

Accepted Answer

A datum target application inc

Exam 14: Datum Targets

When specifying datum targets on a drawing, explain why the datum targets may indicate fixed or movable datum feature simulators.

Where a datum target line or area is indicated on a non-planar surface, a flat-tipped gauge element is often used as the datum feature simulator.

A(n) ____________________ is a designated area used in establishing a datum.

A(n) ____________________ gauge pin is often used as the datum feature simulator for a datum target point.

What are the three different ways a datum target line symbol may be specified on a drawing?

Datum targets cannot be used to establish a simulated datum from a feature of size.

Datum targets should be specified on parts where it is not practical (or possible) to use an entire surface as a datum feature.

Datum targets can be used to establish a simulated datum from irregular surfaces.

Where datum target points are used to establish a primary datum from a planar surface, ____________________ target points are used.

The symbol for a datum target point is a(n) ____________________-shaped symbol.

What does a pointed end on the datum target symbol indicate?

Datum targets are shown on an engineering drawing and describe datum feature ____________________.

The side of a gauge pin is often used as the datum feature simulator for a datum target line.

When using datum targets to establish a complete datum reference frame, which three requirements should be met?

What are the two types of symbols included in a datum target application?

Drawing Standards

Dimensions, Tolerances, and Notes Used on Drawings

Coordinate Tolerancing and Geometric Dimensioning and Tolerancing GDT

General Dimensioning Symbols

Key GDT Terms

Symbols and Modifiers

GDT Rules

GDT Concepts

Flatness Tolerance

Straightness Tolerance

Circularity Tolerance

Cylindricity Tolerance

The Datum System

Size Datum Features Rmb

Size Datum Features Mmb

Perpendicularity Tolerance

Parallelism Tolerance

Angularity Tolerance

Position Tolerance - Introduction

Position Tolerance - RFS and MMC

Position Tolerance - Special Applications

Position Tolerance Calculations

Circular and Total Runout Tolerances

Concentricity and Symmetry Tolerances

Profile Tolerance - Basic Concepts

Profile Tolerance Applications

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