What are the key components of a multi-finger scratch and mar tester

The key components of a multi-finger scratch and mar tester include:

1. Base unit: The main body of the tester that houses the control panel and the test area.

2. Test area: The area where the sample is placed for testing.

3. Multi-finger assembly: The assembly that holds the scratch and mar fingers.

4. Scratch and mar fingers: The metal fingers that scratch or mar the sample surface.

5. Load cell: A device that measures the force applied by the scratch and mar fingers.

6. Control panel: The interface that allows the user to set the test parameters and control the tester.

7. Motorized stage: The stage that moves the sample under the scratch and mar fingers.

8. Camera: A camera that captures images of the sample surface before and after testing.

9. Software: The software that controls the tester, analyzes the test results, and generates reports