Richard, Interesting device, but... To avoid errors, I would have thought you need to eyeball the centre dot directly, from above, otherwise the axis of eyeball and dot is at an angle and will only be coincident with the spindle axis at one point along that axis. I use a "proper" centering scope which has a similar angled line of sight at the entry (angled viewfinder) but uses a prism to turn the light to a vertical axis inside the scope, as do all these devices. So I can't see how the device in the drawing you have can give accurate results, except in one position (where the dot on the workpiece will appear elliptical in relation to the dot on the lens).
Regards, Marcus On 17 Oct 2012, at 21:45, kqt4a...@gmail.com wrote: For those with equipment precise enough to make this, what might you charge for one with a 1/4" shank http://email.villagepress.com/pub/MW/20121016/20121016.html Richard ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
