export controls and machine tools 2014-01-06 18:08:18.725086+01 by Dan Lyke 0 comments Interesting thread in motion sensors built into modern high end machining tools, presumably there to prevent mills from being sold outside of export-controlled nations. The thread mentions Mitutoyo selling devices that ended up in North Korea and Iran, and, of course, the tale of Toshiba selling milling machines to the Soviets which helped them build quieter submarine propellers.