Back to Topic 1.1 — Ergonomics
1.1.4Design Technology SL4 flashcards

Adjustability and sizing

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Card 1 of 41.1.4
1.1.4
Question

What two strategies let one product suit a range of percentiles?

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All 4 Flashcards — Adjustability and sizing

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Card 1concept

Question

What two strategies let one product suit a range of percentiles?

Answer

Designing the product to be adjustable, and producing it in a range of fixed sizes. Many products use both.

Card 2comparison

Question

Adjustability — one advantage and one disadvantage.

Answer

Advantage: one product covers the whole 5th–95th range with one set of tooling. Disadvantage: the mechanism adds cost and weight, can fail, and only helps if the user actually adjusts it.

Card 3comparison

Question

A range of sizes — one advantage and one disadvantage.

Answer

Advantage: each item is simpler, lighter and cheaper, with nothing to break. Disadvantage: several sets of tooling and stock, and the user must pick the right size.

Card 4example

Question

Give a product that uses BOTH strategies and say why.

Answer

A cycle helmet: two or three shell sizes keep each one light, and an adjustable cradle closes the remaining gap — a loose helmet does not protect in a crash.

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