Professional micrometer sextant manufactured by C. Plath of Hamburg, Germany, private-labeled Navistar Professional, serial number 71484. High-precision metal sextant with micrometer drum, telescope, and original fitted case. Includes original factory Prüfungszeugnis (test certificate) confirming calibration. Micrometer turns smoothly, frame is straight, optics appear clear. No cracks or repairs observed. Normal light cosmetic wear consistent with age. This is a true professional-grade navigation instrument suitable for marine use, collection, or display. Ships carefully packed and insured.
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