<http://schema.org/description>
"&lt;p&gt;When aerospace machining specialist Alson Manufacturing of Compton, California, produced its first parts more than 30 years ago, allowable tolerances on a 160-inch part might have been 0.030 to 0.040 inch. Today, thanks to an industry-wide narrowing of tolerances, that same part has to be machined to within \u00B10.004 inch of the printed specification.&lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/articles/retrofitted-laser-scale-systems-improve-linear-accuracy-of-gantry-mills>