Mac / List How about drilling a hole in the center of the ball then the light shining through would indicate the center and should be very visible.
Regards, Henry On 03/27/97 17:18:50 you wrote: > >At 01:05 PM 3/27/97 -0500, you wrote: >>Hello All, >> >>I've noticed that with a slender, pointed gnomon set perpendicularly to the >>dial's face, the shadow's tip sometimes isn't very distinct. Probably >>that's why such a gnomon might be terminated with a knob or ball. >> >>My questions are, if the gnomon ends with a ball would you measure the >>length of that gnomon to the center of the ball or use the overall length? >>Would the shadow's tip be easier to determine with one scheme over the >>other? >> >>Thanks for your thoughts, >> >>Mac Oglesby
