Definition:
The quality of doing things very carefully and with great attention to detail. Thoroughness is accomplishing a task through concern for all the areas involved, no matter how small. Monitors and checks work or information and plans and organizes time and resources efficiently.
Figure: Thoroughness to detail
Here in the above image, after painting a picture we need to cross verify the picture after painting the picture whether any mistakes done previously. If done any mistakes then we need to rectify the mistake from the picture.
Having thoroughness to detail in each and every work makes the picture better for next time.
Figure: Checking thoroughly to detail
In the above image, the motherboard after manufacturing we need to check thoroughly each and every part whether it is perfectly fixed or not. If not we need to modify again to the new position. In this part we need to go thoroughly to detail in each and every part of the product.