The document attached here provides specifications on the 4-in-1 Stereo Microscope Calibration Targets.
The 4-in-1 stereo microscope calibration targets are designed to be mounted to and backlit by the stereo microscope calibration target holder. The 4-in-1 calibration targets should be used in conjunction with the flat speckle pattern target since the stereo microscope requires distortion correction in addition to traditional calibration.
Nick Lovaas
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