I have a brain fart in writing the decimal for my spindle tir. I replaced my spindle bearings on my SX3 and measured the R8 taper with a 0-15-0 DTI indicator with .0005 graduations. My indicator is moving half way between one .0005 graduation, that is to say, one half of a half a thousandth.

Two things, what is the correct decimal fro this reading? and is this considered good?

Thanks for any help.

2. .00025 Yeah, that's pretty good

3. A half of a half would be a quarter, or .00025. For an SX3, yes that is pretty good. To put that into perspective, the average plastic grocery bag is .0005 thick.

CR.

4. Not that anyone here minds answering questions, or of course the "sanity check" when you just don't believe yourself, but...

You could do the math by hand or with a calculator:

.0005
x 1/2
_____

~or~

.0005
x .5
_____
.00025

yup, that's not bad at all. I'll bet a lot of high end US made stuff is out a lot farther than that.

Now that you have something to measure that is less than the resolution of you DTI, you have a perfectly good excuse to blow some dough on a new digital something to measure with