The bushing is shaped like a "T" with a hole drilled in the stem.
Bushing No. 2, which is undergoing the test, should be ⅝ inch from this center line.
For a brief second after the escape of the dolly he stood still on the bushing.
The bushing forms a bearing for the work and holds it rigidly.
This bar is steadied by its bearing in bushing r in the chuck.
B's Indicate ...