GCSE-readyScales of production and quality
Making one wedding dress is very different from making a million phones. The number you make changes how you make it.
Scales of production
| Scale | What it means | Example |
|---|---|---|
| One-off (bespoke) | A single product made to order, often by skilled workers | A made-to-measure suit, a bridge |
| Batch | A set number of identical products made together, then the next batch | Bread in a bakery, school furniture |
| Mass | Very large numbers made on a production line | Cars, phones, ballpoint pens |
| Continuous | Made non-stop, 24 hours a day | Steel, oil refining, paper |
Jigs, templates and moulds
A template is a shape you draw round or cut round to copy an outline.
A jig holds the work or guides a tool so an operation, such as drilling a hole, is in exactly the same place every time.
A mould is a hollow shape that material is formed in, such as in injection moulding or vacuum forming.
Quality and tolerance
Quality assurance is the whole system that makes sure quality standards are met at every stage.
No part is perfect. A tolerance is the allowed range. '60 mm ± 0.5 mm' means any size from 59.5 mm to 60.5 mm passes.
Making more items usually lowers the cost of each one. This is called economies of scale.
A part must be 60 mm ± 0.5 mm. A batch of parts measures 59.7 mm, 60.6 mm and 60.4 mm. Which fail?
- Smallest allowed: 60 - 0.5 = 59.5 mm.
- Largest allowed: 60 + 0.5 = 60.5 mm.
- 59.7 and 60.4 are inside the range; 60.6 is too big.
Answer: The 60.6 mm part fails; the others pass.
One-off, batch, mass and continuous production. Jigs guide tools, templates copy outlines and moulds shape materials. Quality control checks parts; a tolerance is the allowed range (60 ± 0.5 mm means 59.5 to 60.5 mm).
- Quality control
- Checking products or parts during manufacture to find faults.
- Tolerance
- Size ± tolerance gives the allowed range: 60 ± 0.5 mm means 59.5 mm to 60.5 mm.
- Template
- A shape you draw round or cut round to copy an outline accurately.
- Jig
- A device that holds work or guides a tool so an operation is repeated accurately.
- Mould
- A hollow shape that material is formed in to give it a shape.
- Scale
- 1:2 means the drawing is half the real size; 2:1 means it is twice the real size.
- Not “A shape you draw round”. That is a template.
Try two quick questions
See if it has sunk in. Answers are marked straight away.
2 more questions
Try each one, then tap to check.
Which product is usually made by mass production?
- Cars
- A made-to-measure suit
- A bridge
- A wedding cake
Show the answer
Answer: Cars
Cars are made in huge numbers on lines.
Which scale of production is the most expensive per item?
- Mass
- Batch
- Continuous
- One-off
Show the answer
Answer: One-off
Each item is made individually.
Check you have got it
Answer 7 quick questions with instant marking. If you get one wrong, GCSE-ready shows you why and gives you another go. It is free, and you do not need an account.
Last updated 2 October 2026. Spotted a mistake? Tell us and we will fix it.