How quality in work can be measured ?

1.360 degree performance appraisal.

2. Key Performance Indicators (KPI).

3. Learning and contribution rate on creative work.

1. Creativity
2. Adherence to policy
3. Staying in the context
4. Contineous improvement
5. 360 degrees
6. Considering all factors involved
7. Considering Others point of view
8. Braodening of perception

Through:

1- Critical Success Factors (CSF)

2- Key Performance Indicators (KPI)

Proficiency in a work desides quality of that work.

       If your clint and customers fully satisfied with your work or performance, then you can say that you have done quality in your work.

Quality on work with reasonable Time.

how much work can be done accurately in1st attempt!

To measure your firm quality you have to define as first what your target and what does mean quality for then you can measure it, is performance equal to planned performance,  what about standard deviation,

honesty

Quality is doing something or producing something as per the standard and specifications expected from it. Quality is not neccessarily doing or building something very top class for example if a pipe needs to be manufactured with a diameter of1" +/-0.05 then it should always be produced within the specifications of0.95 inches to1.05 inches. if it is so then it is a quality product.  it is no use trying to manufacture it for example0.99 to1.01 as it is not the required quality specifications.

As for the measuring of quality there are tools and techniques to do that for example six sigma etc 

It can be measured by the output it generates. If the result is within time and within budget then perfect. For productivity and production unit it is the quality of the product with time and budget. For sales your market share within expected target so on and so forth.