Actual size

No. of pixels in defect portion

Measured size (mm)

% of Error

Ø 5 mm, 3 mm depth

35.1

5.2

4.0

Ø 7.5 mm, 5 mm depth

49.4

7.3

2.7

Ø 10 mm, 7 mm depth

66.4

9.8

2.0