Calculator User Manual
Constants and Measurement Units  291
Rules for User-Defined Unit Names
Rules for User-Defined Unit NamesRules for User-Defined Unit Names
Rules for User-Defined Unit Names
The naming rules for units are similar to variables.
• Can have up to 8 characters.
• First character must be an underscore. For 
_, press:
8 5
• Second character can be any valid variable name character except 
_ or a digit. For 
example, _9f is not valid.
• Remaining characters (up to 6) can be any valid variable name character except an 
underscore.
Defining a Unit
Defining a UnitDefining a Unit
Defining a Unit
Define a unit the same way you store to a variable.










