Just got back from the Rohde Ranch and had a chance to really take a look at one of my acquisitions and review my porcelain guides. What really attracted me to this fogbowl was its squished appearance. Normally fogbowls have a large interior cavity at the bottom opening. This one does not. The vertical separation from the recessed, extended inner skirt and the outer skirt is only 3/8" which can be viewed in the second photo. There is also a middle skirt somewhat visible in the next photo which is noticeablely shorter than the other skirts. Next photo [id=433989350].

Anyone else collect the fogbowls? Got any thoughts? Dimensions, details and more photos sent to Elton.

Here is Elton Gish's response dated April 19, 2015:

It is the Locke U-856 (5 x 4-3/4). The primary focus on selecting a U-number should be the profile, not the dimensions. The difference in diameter is perfectly acceptable for an insulator this size. It was made over a long period of time, so the chocolate brown glaze would indicate a late production. These were formed by hand to get the bowl form, so you can imagine there could be variability, but the profile matches U-856 very well. The wider lower section of the top indicates the bowl was not formed well to fit the more narrow lower bowl. This could explain much of the difference.