I'll start with the questions first:

1) What kind of equipment is typically used to perform drive current measurement of a crystal circuit (typical o-scope current probes are not precise enough at low range)?

2) Secondly, with the DS1307 application circuit showing no passive components, is it really needed to go through this process to achieve stability? I deffinatly want my RTC clocking accurately.

Now the background\detail:

I'm having trouble grasping all the necessities to proper crystal component choices.

I have a DS1307 real-time clock, of which, the application recommended circuit symply shows a crystal (32.768kHz), but no passives in use.

DS1307 datasheet: http://datasheets.maxim-ic.com/en/ds/DS1307.pdf

This contradicts most of the application notes I have read. IE: I am specifically reading through Fox Electronics application notes on tuning forks here:
http://foxonline.com/appnotes.htm

Fox recommends a starting point of assuming R1 (internal resistance) is 20Mohms and R2 (external) is 500kohms along with setting capacitors C1 and C2 between 10 and 20pF.

This is fine and dandy. Next, they recommend measuring the actual current in operation using a current probe. We have available a Tektronix TCP312 (with TCPA300 amplifier) current probe.

Looking at the specs of the current probe, it claims the lowest measureable current is 1mA. I would think this is too high to measure a crystal drive current.

Yet, I can't find a current probe that would measure lower.

So, what do you seasoned vets do in such a situation?

Thanks much
Tomas