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The Pocket Universal Methods of Design by Bella Martin, Bruce Hanington

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033 Ergonomic Analysis

An assessment of tools, devices, or environments to optimize fit, safety, and comfort

• Performed to suggest redesign improvements or establish ergonomic criteria for new design.

• The five interrelated criteria commonly used are:

1. Size: Anthropometry is the systematic measurement of people to assess and design tools and systems.

2. Strength: Manual force encompasses finger/hand strength for triggering and gripping and body strength for lifting.

3. Reach: Assesses safe access to operator controls or environmental features and is typically based on fifth percentile females to accommodate most users.

4. Clearance: Assesses effective space within and around machinery and for avoiding environmental obstacles and is commonly ...

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