Note: This question is for the older version of this part, but we thought you might still find it helpful
Is the grid scale in the parts pictures 1" = 1 square? Is it accurate?
Answer Yes Mike, it is one inch per square and accurate. Obviously, depending on what you are measuring the camera can affect the view. If you need a particular part, it is best to provide a model number so we can get you the correct part per the manufacturer's specifications. Thanks!