National Museum of American History
Range Finder
J. J. Hicks · 1870s
Patent model for H. S. S. Watkins, "Improvement in Surveying-Instruments," U.S. Patent #213018 (1879). The inscriptions read "WATKINS Field Range Finder -- J. HICKS MAKER, 8 Hatton Garden, London" and "No. 12."
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