Yes, that is the braille ruler that I mentioned in the original post. As I said before, it is one of my favorites.
Another one of my favorites is in the zig zag thread, photo 7. It is a Lufkin zig zag extension rule (like an X46) that is 14.5 or 15 feet long. It goes 0 to 6, 0 to 6, and then 0 to 2.5 or 3. The joints look factory. All I can figure out is that it was for someone doing repeated measurements at the long end of the rule (14.5 to 15 feet), like a commercial garage door installer. I bought it on Ebay about 17 or 18 years ago, and paid quite a bit for it.
