<p>When it comes to designing dashboards for web applications, people often turn to
dials as a way of representing a single data point that fluctuates over time.
Think of a speedometer in a car.</p>

<p><img alt="Speedometer" src="http://images.thoughtbot.com/dials/speedometer.jpg"></p>

<p>It’s easy to glance down and get the current speed on…</p>

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