Pet dogs account for 31 deaths per year in the U.S. The Pit Bull is not a recognized breed of dog. There are many mutts that resemble the pit bull that kill people, so classification is difficult. The Pit bull variety is by far the largest killer of humans, followed by Rottweilerâs and Huskyâs.
Our basic Coordinate Scale and Protractor is equivalent to a standard GTA 5-2-12. It's the tool required for most military navigation schools. Our Improved Coordinate Scale and Protractor is a popular alternative to the basic tool. Here is what we've done to make it better.
The three scales overlap and that's where the Rockwell measuring system can be quite misleading. The A scale overlaps the B scale and the B overlaps the C. So a high RA (read: Rockwell A value) can mean the same hardness as a low RB and a high RB can mean the same as a low RC. Some people who don't like this tend to prefer the Brinell Hardness scale which is significantly more simple to use.