Chessboard Calibrator Lens Test Target Focus Calibration Chart Camera Distortion Correction Pattern Checker Oxidized Aluminum on Glass Base 18 Rows 18 Columns (400)
Special Features
- Total size is 400mm square, subunit is 20 mm square
- Pattern is 18 column × 18 rows, size and pattern customizable
- High precision, error less than 5 micro meter
- Stable dimension. made from high quality aluminium alloy.
- Diffuse reflective surface, clearer and more user-friendly
Description
Lens focus calibration chart
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