Dial Bore Gauge
A dial or vernier bore gauge measures a bore directly. The gauge has three symmetrical anvils that protrude from the gauge body that are connected to the dial or micrometer mechanism. As the knob is rotated it moves the anvils in or out with respect to the measurements. The knob usually has a slipping mechanism to take the feel out of the device and increase reliability between measurements. The measurement given is the mean diameter of the three anvils, and is usually good to 0.001 mm (3.9×10−5 in).
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Famous quotes containing the words dial and/or bore:
“Decades of Arrogance between
The Dial life—
And Him—”
—Emily Dickinson (1830–1886)
“Poetry is either something that lives like fire inside you—like music to the musician or Marxism to the Communist—or else it is nothing, an empty formalized bore around which pedants can endlessly drone their notes and explanations.”
—F. Scott Fitzgerald (1896–1940)