9-inch Radius Ebony Vernier Sextant by D. McGregor

Description:

9-inch Radius Ebony Vernier Sextant by D. McGregor, Greenock, with bone scale divided 0-105, brass index arm with vernier, thumbscrew lock and fine adjustment, mirror and colored filters, 3 3/8 in. brass tube monocular, bone maker's plaque marked in block lettering D. McGregor. Greenock and in script J. McKenzie Greenock, turned wooden handle.
Estimate $350-550

lacking a 2 1/4 in. segment of bone scale, 1/4 in. segment of vernier scale, ebony radius arm broken, reglued and backed with brass, front feet are replacements made of threaded brass wire.

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