| | Regions | Calibration coordinate (mm) | Actual coordinate (mm) | Absolute error (mm) |
| | The visual calibration of the sealing port |
| | P1 | (27.17, −243.74) | (27.6, −244.67) | (−0.43, 0.93) | | (21.94, −352.85) | (22.35, −353.75) | (−0.41, 0.90) | | (29.48, −328.03) | (29.98, −328.97) | (−0.5, 0.94) |
| | P2 | (116.93, −315.76) | (117.17, −316.06) | (−0.24, 0.30) | | (150.01, −315.94) | (149.68, −316.22) | (0.33, 0.28) | | (148.2, −279.45) | (148.16, −279.6) | (0.04, 0.15) | | (165.83, −301.86) | (165.83, −301.86) | (0.38, 0.41) |
| | P3 | (253.56, −243.24) | (253.1, −244.84) | (0.46, 1.60) | | (251.34, −390.43) | (250.77, −391.66) | (0.57, 1.23) | | (291.22, −248.72) | (290.59, −249.97) | (0.63, 1.25) |
| | The visual calibration of the sealing ring |
| | G | (347.68, 44.39) | (347.84, 44.21) | (−0.16, 0.18) | | (361.89, 50.03) | (361.69, 50.31) | (0.2, −0.28) | | (373.35, 29.82) | (372.98, 29.73) | (0.37, 0.09) | | (364.62, 34.43) | (364.38, 34.22) | (0.24, 0.21) | | (375.87, 20.08) | (375.51, 20.00) | (0.36, 0.08) | | (392.26, −19.59) | (391.95, −19.17) | (0.31, −0.42) | | (323.7, 65.59) | (323.44, 65.32) | (0.26, 0.27) | | (331.09, 13.57) | (331.44, 13.79) | (−0.35, −0.22) |
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