Horse with mouth speculum and veterinarian filing teeth. Horses get sharp edges and need to have them removed, a procedure known as floating. The white specks are actually the tooth debris. Attach to the right side is battery pack for the light that is attached to the speculum.
Nicely done, Flo. The poor guy (horse) doesn't seem terribly pleased with the process, but maybe that's just from the angle we're watching at. That's quite a contraption he's wearing, but it looks like it works well. Interesting story-telling image.