Tolerance in Engineering Drawings

Multiple Choice

What is the purpose of specifying tolerances on engineering drawings?

• To indicate the allowable variation in dimensions

• To provide decorative elements

• To specify the material type

• To indicate the scale of the drawing

Multiple Select

Engineers apply tolerances to __________ of parts to reduce the amount of variation that may occur.

• Dimensions

• Measurements

• Drawings

• Descriptions

Multiple Select

Tolerance is important for __________ and __________.

• Safety

• Quality

• Designs

• Tools

Dropdown

No two manufactured products are ​

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in every way. Some degree of variation(​

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) always exists. Engineers apply tolerances to ​

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(measurements) of parts to ​

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the amount of variation that may occur.  

Drag and Drop

It is not always possible to create ​

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products, especially if large quantities are made. ​

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may be applied to certain products, dictating the minimum and ​

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measurement it must be. Tolerances are the ​

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of difference that is agreed. 

Drag these tiles and drop them in the correct blank above

identical

maximum

acceptable range

Tolerance

Multiple Choice

Which of the following symbols is used to represent the fundamental tolerance?

• ⌀

• ±

• √

• ∥

Multiple Choice

If a dimension on a drawing is given as 25 ± 0.1, what does this mean?

• The dimension must be exactly 25 units

• The dimension can vary between 24.9 and 25.1 units

• The dimension can vary between 24 and 26 units

• The dimension has no tolerance specified

Multiple Choice

General tolerance indicates the acceptable range of __________ that is agreed.

• Difference

• Designs

• Ideas

• Manufacturing

Labelling

Label the diagram to show it's tolerance features:

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Specific Tolerance

Dimensions

General Tolerance

Multiple Choice

A __________ tolerance is used for specific parts of a design where the size may be more critical.

• Specific

• General

Multiple Choice

If a hole diameter is specified as 10 +0.2/-0.1, what are the maximum and minimum allowable diameters?

• Maximum: 10.2, Minimum: 9.9

• Maximum: 10.1, Minimum: 10.0

• Maximum: 10.2, Minimum: 10.0

• Maximum: 10.1, Minimum: 9.9

Multiple Choice

True or False: General tolerances: Tighter (smaller) tolerances generally result in higher manufacturing costs

• True

• False

Match

Match the following words and their definitions

• Acceptable range of difference agreed upon

• Having a narrower acceptable range

• Smaller range leads to higher costs, recorded using plus or minus symbol

• Dictates minimum and maximum measurement, applied to critical parts of a design

Tolerance

Variation

General Tolerance

Specific Tolerance

• Tolerance

• Variation

• General Tolerance

• Specific Tolerance

Open Ended

Name one reason why including tolerance in engineering drawings is important to engineers.