Graphite has the same chemical composition as Diamond, which is also pure carbon, but the molecular structure of Graphite and Diamond is entirely different.
The California king size is a mattress measuring 72 inches wide by 84 inches long. In terms of length it is four inches longer than the standard king and queen size mattresses. The mattress was made by David Bergeson of California sometime in 1982.
Calibrate for specific dimensions. Close the large outer jaws of the dial caliper gently but firmly around the edges of a 1-inch gauge block. Check that the caliper measures 1 inch. Repeat with 4-inch and 8-inch gauge blocks, as well as a gauge block close to the final dimension of the product being measured.