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<a accesskey="3" href="page.php?w=ball-and-disk_integrator&amp;p=2">3.Next</a>
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<p><a href="page.php?w=Image%3AHarmonic_analyser_disc_and_sphere.jpg">thumb</a>The <b>ball-and-disk integrator</b> is a key component of many advanced <a href="page.php?w=mechanical_computer">mechanical computer</a>s. Through simple mechanical means, it performs continual <a href="page.php?w=integral">integration</a> of the value of an input. Typical uses were the measurement of area or volume of material in industrial settings, range-keeping systems on ships, and tachometric <a href="page.php?w=bombsight">bombsight</a>s. The addition of the <a href="page.php?w=torque_amplifier">torque amplifier</a></p><p>
<a accesskey="3" href="page.php?w=ball-and-disk_integrator&amp;p=2">3.Next</a>
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