Slightly off-topic : History behind lettered drills
Posted by
Ken Jenkins
on 2000-10-02 12:31:18 UTC
Obviously fractional drill sizes go back to some part
of a British king's anatomy, and we have the French
to thank for metrics, numbered drills, I believe are
related to standard wire guages ... but what about
lettered A-Z drills. Where did they come from? Just
curious.
of a British king's anatomy, and we have the French
to thank for metrics, numbered drills, I believe are
related to standard wire guages ... but what about
lettered A-Z drills. Where did they come from? Just
curious.
Discussion Thread
Ken Jenkins
2000-10-02 12:31:18 UTC
Slightly off-topic : History behind lettered drills
catboat15@a...
2000-10-02 12:59:16 UTC
Re: [CAD_CAM_EDM_DRO] Slightly off-topic : History behind lettered drills
Darrell
2000-10-02 14:04:11 UTC
Re: [CAD_CAM_EDM_DRO] Slightly off-topic : History behind lettered drills
Steve Roberts
2000-10-03 11:08:22 UTC
Re: [CAD_CAM_EDM_DRO] Slightly off-topic : History behind lettered drills
catboat15@a...
2000-10-03 13:50:35 UTC
Re: [CAD_CAM_EDM_DRO] Slightly off-topic : History behind lettered drills
Steve Roberts
2000-10-03 16:04:38 UTC
Re: [CAD_CAM_EDM_DRO] Slightly off-topic : History behind lettered drills
Greg Nuspel
2000-10-03 16:16:08 UTC
Re: [CAD_CAM_EDM_DRO] Slightly off-topic : History behind lettered drills
catboat15@a...
2000-10-03 21:04:10 UTC
Re: [CAD_CAM_EDM_DRO] Slightly off-topic : History behind lettered drills