4. Prototype design
On the basis of the information gathered during steps
one, two and three, we now develop the first working prototypes.
Each prototype is designed to conform to the latest ergonomic
findings by researchers.
Hand and handle must work together in harmony. The
user must be able to exert precise manual control over
the tool's working parts - the jaws of an adjustable
wrench, for example, or the tip of a pair of pliers.
We pay special attention to the fact that users' hands
come in all shapes and sizes.
Other key factors that influence material selection
for the prototype are climate, temperature and typical
industrial applications.
We make prototype tools out of the same materials and
in the same colours, so that user tests will provide
us with as much realistic feedback as possible.
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