ial">(</span><span class="keyword">const</span> <a class="link" href="unit.html#boost.units.unit.this_type">this_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp189083904"></a><h2>Description</h2>
<p>(e.g. meters, Kelvin, feet, etc...) </p>
<div class="refsect2">
<a name="idp189084288"></a><h3>
<a name="boost.units.unitconstruct-copy-destruct"></