ADDA Drafting Certification: Competency
12 - Mastering Working Drawings,
Identification, and Numbering Systems
assembly drawing - correct answer ✔✔shows entire assembled machine/structure or assembly of one
part of a larger assembly
working drawing - correct answer ✔✔combined detail and assembly drawing giving complete
dimensions for all parts
outline assembly drawing - correct answer ✔✔shows assembly so as to give general information to its
character and size and how it fits into environment
sub-assembly - correct answer ✔✔an assembled part that is a part of a larger assembly.
detail drawing - correct answer ✔✔a dimensioned drawing of one specific part that makes up an
assembled object
general assembly - correct answer ✔✔shows how parts fit together and how assembly functions
zones - correct answer ✔✔locate specific points on the drawing using the coordinate system
ECO - correct answer ✔✔Engineering Change Order; also called Engineering Change Notice; used for
changes in components, assemblies, or documents such as processes and work instructions; may also be
used for changes in specifications
ECN - correct answer ✔✔Engineering Change Notice; also called Engineering Change Order; used for
changes in components, assemblies, or documents such as processes and work instructions; may also be
used for changes in specifications
12 - Mastering Working Drawings,
Identification, and Numbering Systems
assembly drawing - correct answer ✔✔shows entire assembled machine/structure or assembly of one
part of a larger assembly
working drawing - correct answer ✔✔combined detail and assembly drawing giving complete
dimensions for all parts
outline assembly drawing - correct answer ✔✔shows assembly so as to give general information to its
character and size and how it fits into environment
sub-assembly - correct answer ✔✔an assembled part that is a part of a larger assembly.
detail drawing - correct answer ✔✔a dimensioned drawing of one specific part that makes up an
assembled object
general assembly - correct answer ✔✔shows how parts fit together and how assembly functions
zones - correct answer ✔✔locate specific points on the drawing using the coordinate system
ECO - correct answer ✔✔Engineering Change Order; also called Engineering Change Notice; used for
changes in components, assemblies, or documents such as processes and work instructions; may also be
used for changes in specifications
ECN - correct answer ✔✔Engineering Change Notice; also called Engineering Change Order; used for
changes in components, assemblies, or documents such as processes and work instructions; may also be
used for changes in specifications
