How do you actually determine centering ratios?

[Fred]

If the grading companies took the time it would be fairly easy to get the centering down to a gnats ass by using a high resolution scan and then using a software program to determine the ratios of the much larger area available for measurement - but hey, what do you expect for 10 bucks (or what ever they happen to be charging to grade a card)?

[toledo_mudhen]

So I am one those "centering freaks" and the process I use is to do a hi res scan of the card and then I open up the scan in Picassa so I can rotate left - right etc.

Then I use my trusty JRuler which allows me to determine the number of pixels of white space on each border S/S & T/B

From there it's just divide the number of pixels on one side by the total number of pixels on both sides to get a percentage.

JRuler is a free tool that can be found at :

http://www.spadixbd.com/freetools/jruler.htm

hope this helps..............

[Rookiemonster]

Very carefully.......