| Brand | Unbranded |
|---|---|
| Type | Unknown |
Check the listing for details. Optical Calibration Disc Precision Aperture Plate for Z-to-Z Offset Measurement. Condition: Used. Listed at 77.97 USD. Label identifies specific Z1–Z2 apertures for depth (Z-axis) offset calculation. Machined aluminum or steel disc with multiple precision apertures.
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