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Vintage cylindrical brass bore gauge for measuring instruments. Features a small viewing window. Patina consistent with age.
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This is a vintage brass bore gauge designed for measuring the internal diameter, or bore, of musical instruments or other cylindrical objects. It has a cylindrical form with a closed end and a viewing window with a square opening. The other end is open with screw threading, suggesting it may have attached to a measurement instrument. The overall colour is golden brown, consistent with brass. There is patina and some discolouration across the surface of the object, suggesting age and use. The gauge is intact, but its original purpose is unknown. It could be an interesting decorative piece or addition to a collection of scientific or musical instrument related objects.
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