Hi y'all from NC,
Actually "00 Bowman probe" is correct for what sounds like "double 0 Bowman probe." Here's how I found out:
I found this board while trying to answer the very same question. The 00-0 answer seemed confusing to me so I decided to check the Katena Eye Instruments catalog for myself (www.katena.com
if you're interested).
According to the online catalog, the probes are sold in sets of six, with two sizes to each set (presumably three of each probe are included in a set). Thus, 00-0 is a set of six probes including the size 00 Bowman probes and the size 0 Bowman probes. They are also available in sizes 0000, 000, 1, 2, 3, 4, 5, 6, 7, and 8. All are sold in sets of six containing two sizes per set of six. Gaye's confusion arose from the online catalog's use of hyphens to group sets with related sizes sold together (e.g., 0000-000, 00-0, 1-2, 3-4, 5-6, 7-8). If you click on a product number, the text on the following page clears up the confusion.
Sorry for the lengthy discussion of such a tedious subject.
I believe I will now go drink a beer and write an ode to lacrimal probes.