When tolerances become tighter and size becomes more critical, it becomes more important to understand the general requirements of straightness or concentricity. To illustrate this, suppose a 4 in.

emerging out of the top of his skull "Phineas Gage had a hole in his head, and ev'ryone knew that he oughta be dead. Was it fate or blind luck, though it never came clear, kept keepin' on year ...

Mahr Federal Inc. has developed a portable measurement gage that the company says can be used to determine roundness, flatness, concentricity and axial run-out on the shop floor. Mahr Federal Inc. has ...

Phineas Gage was a railway worker in 19th-century Vermont ... in Boston to see for herself what remains of The Man With The Hole In His Head. At the Oliver Zangwill Centre for Neuropsychological ...

But incredibly, his jaunty tune about Phineas Gage is true. He did have a hole in his head, and against all the conceivable odds, he should have been dead. But instead, his remarkable story ...

"Phineas Gage had a hole in his head, and ev'ryone knew that he oughta be dead. Was it fate or blind luck, though it never came clear, kept keepin' on year after year…" That song by banjo man ...