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<p>[QUOTE=&quot;rmpsrpms, post: 9433009, member: 31773&quot;]The way to be sure about machine doubling versus die doubling is to determine whether the devices are <b>larger</b> (die doubling) than they should be, or <b>smaller</b> (machine doubling). In the case above, the high points of the devices are reduced in size versus normal. The die has hit against the devices and smashed them a bit, leaving a flat area on part of them, and a bit of raised area on the rest. This is classic machine doubling.</p><p><br /></p><p>For die doubling, the first hubbing makes a normal size device, while the second hubbing, since it offset from the first, makes the devices larger than normal. Some folks look for &quot;notches&quot; between the two device hubbings, but you don&#039;t always see these and they are not a requirement for attributing a doubled die.[/QUOTE]</p><p><br /></p>

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