A type of turnover shaped like a "J" for lifting or turning over dies or die sections.
Source: The OHIO State University
J
J Number
Number used to identify special accounts to cover the cost of new work or engineering changes. Numbers can be found in a book in supervisor's office. Also called project numbers or tool order numbers.
Source: The OHIO State University
Jog Borer
A machine to locate and machine holes accurately. Also called a locator.
Source: The OHIO State University
Joggle
An offset surface consisting of two adjacent, continuous, or nearly continuous short radius bends of opposite curvature.
Source: The OHIO State University
Julian Date
A three digit number designating the day of the year. Examples: January second is 002, February twentieth is 051, November fifteenth is 319. Used for stamping date on parts.
Source: The OHIO State University