Hello, this is a lettering style typically referred to as Round Serif, originally printer in a book on lettering by a man named Martin Meijer in 1956. It was brought into the industry by an AICA member as part of their series of blueprint alphabets, and was often done by hand before being digitized. There are several digital versions that vary in weight, and elegance, and most of them have been very poorly drawn. There are multiple versions created by AICA members, as well as versions in Monu-Cad, and Cochran’s software. As mentioned by Chris, the Monu-Cad version was renamed to K&O Sandblast 1.
This version is one of the more properly drawn versions, mimicking actual broad-nib calligraphy, and keeping the beauty of the original. This is likely one of the custom versions of the font created by an AICA member. I would reach out to Hunt Memorials of Nashville, as I have seen them use this specific version of the font.
Eventually there are plans to create an MLC version of the font, properly drawn according to the original version.