MAJOR EIGHTEENTH CENTURY DIVIDERS, probably English or French, c. first half 18th century. Measuring a full 15-1/8″ (38 cm) tall, they are constructed with a brass body, eight sided “pommel” head, smoothly-acting five-leaf brass and steel hinge, and tapered steel tips, one removable. The brass shoulders have delicate shaping, and there is fine decorative geometric engraving on four sides of the pommel, and around the lower end of the hinge-work. Condition is fine noting light spotting. A major pair of precision dividers, remarkable for their size and beauty.
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David and Yola Coffeen both have enjoyed academic careers, as planetary astronomer and as linguist/educator. But since 1982 (yes, 1982!) they have been full-time dealers in early scientific and medical instruments, under the name Tesseract. Selling primarily by catalogue (over 100 issued so far) they also have a web presence at www.etesseract.com, and can be contacted at firstname.lastname@example.org.