Image
Category
Collection
Maker
On Display
Object type
Place
Material
Date

Sector by Bion

1700-1720

12 inch architectonic sector in ivory and silver

1733-1795

Silver sector signed by Culpeper

1700-1737

Boxwood sector

Brass sector, by Martel, Geneva

Wooden sector, radius 4 1/2 inches

4 1/2-inch ivory sector

5 1/2-inch ivory sector

Brass sector, 6 1/2", French, early example

Wooden sector, radius 4 1/2 inches

Brass sector, by Butterfield

A brass sector (Gunter's pattern), early 17th century

1600-1625

Sector, 6"; brass; engraved "Culpeper Fecit"

1700-1759

Six inch ivory sector by John Cail

1825-1848

Sector by Troughton

1801-1830

Sector with scales of chords and equal parts combined with quadrantal protractor or clinometer

1700-1799

Sector by Thomas Jones

1816-1850

Six inch sector by R.B. Bate, London, 1809-1840.

1809-1840

Brass sector engraved "J.Sisson London"

1722-1783

Gunter type

1620-1700

Silver sector

1740-1760

Wooden sector, radius 4 1/2 inches

Six inch boxwood sector by Holtzapffel & Co.

Brass sector with decorative endpoints

Maginnis's universal sector

Surveyor's sector

Brass sector to the design of N. Goldman

1723

Sector dividing circle and straight line into equal parts

Wooden sector, radius 4 1/2 inches

Gunmetal sector

Wooden sector, radius 4 1/2 inches

Wooden sector, radius 4 1/2 inches

Sighting sector/dividers probably Dutch or German

1600-1700

Ivory sector by Isaac Carver

1668-1713

One 6-inch brass sector for fortification and gunnery

1675-1700

12 inch brass sector by Potter, Poultry, London

1851-1876

Ivory sector by W. Elliott & Sonst

1850-1853

Sector 6-inch, brass, engraved "M. Berge, London"

1800-1819

Six inch brass sector

Brass sector with semicircular arc and two folding slit sights

Sector by Butterfield

1680-1724

4 1/2 inch boxwood sector by Holtzapffel & Co.

Six identical wooden sectors, radius 4 1/2 inches, stamped "Holtzapffel & Co 64 Charing Cross", B4355

Six identical wooden sectors

1839-1865

Two ivory sectors by Holtzapffel & Co., 64 Charing Cross (B502; A54794)

Two ivory sectors by Holtzapffel & Co.

1839-1865

Two sectors by W.F Stanley made respectively of ivory and boxwood, c.1876.

Two sectors by W.F Stanley made respectively of ivory and boxwood

1876

Reproduction of Galileo's brass sector

Reproduction of Galileo's brass sector

1965

Boxwood sector, two foot; early example

Boxwood sector, two foot; early example

Collection of two boxwood sectors by Holtzapffel & Co. (B518)

Two boxwood sectors by Holtzapffel & Co.

1839-1865