EARLY FRENCH SECTOR
Stock Number: 9309
$2200.
For sale, 17th century antique brass sector finely engraved and labeled with hand punched numerals.
Typical of early sectors there are two doubled scales per side.
Dimensions
13-3/4 inches (34 cm) overall
Circa
c. second half 17th century
Country of manufacture
France
Description
EARLY FRENCH SECTOR, c. second half 17th century, the substantial brass rule opening on its three-leaf sector hinge to 13-3/8″ (34 cm) overall. The hinge is finely engraved with a six-lobed rose on each side, and the near corners of the sector likewise have fine leaf decoration. There are few scales — only two doubled sector scales per side — as often the case with the earliest sectors. Exquisitely labeled and with hand-punched numerals, we find “Lignes des Partis Esgalles, Les Plans, Lignes des Cordes, Les Sollides.” In fine condition, noting a few stains and with a fine old patina, this is a rare example of early French mathematical instrument.
Ask the Dealer
Dealer information
TESSERACT
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 [email protected].
