Eli5: On a production line, how do they make a car, plane or anything else be identical from one another without differences?

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Eli5: On a production line, how do they make a car, plane or anything else be identical from one another without differences?

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Anonymous 0 Comments

Quality control.
Each component is made to specifications, and if it doesn’t meet specification, it gets tossed/recycled.

For example, car needs a 50.00mm +/- 0.01mm rod in length, 10.00 +/- 0.01 mm in diameter. Worker makes 10 rods. Quality control checks them, finds that one rod is 50.05 mm long when max permissible is 50.01. Tosses it.

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