I am using stu millers arrow calc.What number do I put in for arrow offset from center.I have a hill style longbow and it has very little for a shelf.I know its no where near center but is it a negative number or a pos. number I should be putting there in the calc?I didn't understand the directions.Also should I put a rest(I have a bear hair rest I could use) on that tiny shelf or leave it bare?Thanks Ricky

I hope its right, but on my Martin Savannahs I measured from the center to the strike plate and got 1/4" positive ( + ) On My Martin Hunter it came out as "0". Does this sound right to everybody?

You probably want some sort of rest besides bare wood.  You can use leather, bear hair, the fuzzy side of velcro, seal fur, moleskin etc.

Sorry, I don't know about you r question for Stu's calculator .  I've tried to load the thing a bunch of times but don't have anything on my computer that can read it I guess.  If they ever make it a regular web page with easy access I'll be all over it but I guess till then I'll figure out my spine the old fashioned way.

Positive number. Just find the center of the bow, or middle of the handle, stick a ruler on that point, and measure from that mark to the outside edge of the strike plate, where your arrow will sit.
I get 1/4" on my Hill bow.

There's a little picture in the PDF instruction file on the download page.

Craig Ekin says that the Hill bows he makes are cut to 1/8th -- soooo +1/8 for Stu's calsulator.

That would be "calculator".

Yup, positive number.
I usually use a ruler placed perpendicular to the bow (that's crossways to all you non-technical folks    and just below the shelf.  
1. Figure out how wide the whole bow is just below the shelf.  Divide this number by two.
2. Figure out how wide the bow is at the shelf, including the rest you have on there (leather, velcro, a nice piece of bacon, whatever you're using).
3. Subtract the number you got in step one from the number you got in step two.  That's a positive number in your case and is the number you use in the calculator.

Example:  step 1. You measure your right handed bow at two inches just below the rest.  Divide this by two to get one inch.  That's where the center of your bow is.
step two. you measure your bow (from the right side of the bow to the edge where the sight window starts) and get right at 1.5 inches.  
step three. subtract one inch from 1.5 inches to get half an inch.  enter +0.5" into the spine calculator.

Clear as mud?  I hope I helped.

Kirk