12 × 9 (25 × 25) PET
مقاس12 × 9 (25 × 25)
مميزات خاصة
- 18×18 small blocks printed on 50 * 50 mm square glass board (total), the size of a single black square is 2 mm.
- Aluminium oxide layer on glass base.
- Optical calibrator for film, lens, slide, projector etc.
- Alignment card Calibration board
- Chess board pattern calibrater
- checkered pattern
وصف
Lens focus calibration,
Screen printing film alignment,
Projector, slide calibration,
precision is 20μm.
18×18 small blocks(edge length 2mm square),
Aluminium oxide layer on glass base.
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