Deviation Analysis command
Use the Deviation Analysis command 
to display the deviation between reference objects and test objects. The analysis is based on point-by-point comparison between these two objects.
Deviation analysis is useful when you want to:
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Compare the model created through Reverse Engineering with the scanned model of the actual part.
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Compare the scanned model, which can be of a manufactured part, with the CAD model from which you manufactured.
You can use the command to compare:
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B-Rep models and mesh models
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Two mesh models
You can compare design, construction, or surface bodies. The mesh bodies can be imported STL or JT bodies.
Performing deviation analyses
Before performing a deviation analysis, the bodies should be aligned properly. If the B-Rep model is created in QY CAD using the Reverse Engineering tools, you do not have to align the bodies. If you want to run the analysis between a B-Rep model and a mesh model, you must import the mesh model. After you import the mesh model, you can use the Part Copy command to insert the B-Rep body into the same model. If the bodies are not aligned, you can use alignment tools, such as the Align command or the synchronous Move command with the steering wheel to properly align the bodies.
After the bodies are aligned, you can start the command to Analyze the deviation between the objects.
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