Which of the following describes a drawing that does not incorporate both inch and metric units?

A drawing is considered single dimensioned when it uses only one system of measurement, either inches or metric units. This means that all dimensions, annotations, and notes are presented in a consistent unit, allowing for clarity and ease of interpretation for the user.

In a technical context, having a single dimensioned drawing simplifies communication and reduces the potential for errors that might arise from converting between different measurement systems. Users do not need to mentally or physically convert units because all measurements are presented consistently.

Conversely, dual dimensioned drawings incorporate both inch and metric units, allowing the reader to understand measurements in either system. Metric only refers specifically to drawings that use only metric measurements, while the combined method might indicate a drawing that intertwines different measurement systems in a complementary way. However, these options do not meet the criteria specified in the question, which is focused solely on the absence of both inch and metric units.