Product Metrics Landscape

Metrics for the analysis Model
Functionality Delivered (E.g. Function Point)
System Size (Eg. LOC)
Specification Quality

Metrics for the design model
Architectural Metrics
Component-level metrics
Interface design metrics
Specialized OO Design Metrics

Metrics for source code
Halstead Metrics
Complexity Metrics
Length Metrics

Metrics for testing
Statement and branch coverage metrics
Defect related metrics
Testing Effectiveness
In-process metrics

Reference:
(1) Measuring the Effectiveness of a Test