Contain resource of measurable code metric information - http://thediscoblog.com/2006/05/20/code-quality-for-software-architects/

Meaningful Metrics - http://www.developsense.com/2009/01/meaningful-metrics.html

http://programmers.stackexchange.com/questions/115839/how-clean-should-new-code-be 

Guidelines for a more appropriate use of metrics

    Explicitly link metrics to goals
    Favor tracking trends over absolute numbers
    Use shorter tracking periods
    Change metrics when they stop driving change

http://martinfowler.com/articles/useOfMetrics.html