Design and Technology GCSE
Tolerance
What Tolerance means in Design and Technology GCSE, as defined for Pearson Edexcel.
Definitions of Tolerance
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
The permissible limit of variation in a physical dimension or measured value. For resistors, it is the percentage by which the actual resistance may vary from the stated value.
The allowable variation in the actual value of a component compared to its stated value, expressed as a percentage.
An allowable amount of variation of a specified quantity, especially in the dimensions of a machine or part.
The permissible limit or limits of variation in a physical dimension or measured value.
The permissible limit of variation in a physical dimension or machined part.
The acceptable margin of error in the dimensions of a manufactured part.
Topics that use Tolerance
- Component 2: Non-examined assessment (NEA) - Investigate (Pearson Edexcel GCSE)
- Metals: Alternative processes that can be used to manufacture ferrous and non-ferrous metal products to different scales of production (Pearson Edexcel GCSE)
- Metals: Specialist techniques, tools, equipment and processes to shape, fabricate, construct and assemble a high-quality metal prototype (Pearson Edexcel GCSE)
- Polymers: Alternative processes that can be used to manufacture polymer products to different scales of production (Pearson Edexcel GCSE)
- Systems: Alternative processes that can be used to manufacture components and systems to different scales of production (Pearson Edexcel GCSE)
- Systems: Appropriate surface treatments and finishes that can be applied to components and systems for functional and aesthetic purposes (Pearson Edexcel GCSE)
- Systems: Stock forms, types and sizes in order to calculate and determine the quantity of components required (Pearson Edexcel GCSE)
- Timbers: Specialist techniques, tools, equipment and processes to shape, fabricate, construct and assemble a high-quality timber prototype (Pearson Edexcel GCSE)
Related terms
Using Tolerance in the exam
Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.
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