octant
Date1852-1861
Inventory Number5306
ClassificationOctant
Subject
Maker
Henry Duren
fl. 1852 - 1861
Repaired by
Charles C. Hutchinson
1832 - 1913
User
Radcliffe College
1894 - 1999
Cultural Region
Place of Origin
Dimensionsoctant: 28.2 × 24.9 × 10.5 cm (11 1/8 × 9 13/16 × 4 1/8 in.)
box: 12.1 × 32.4 × 29.5 cm (4 3/4 × 12 3/4 × 11 5/8 in.)
box: 12.1 × 32.4 × 29.5 cm (4 3/4 × 12 3/4 × 11 5/8 in.)
Material
Accessorieskeystone box (mahogany?), second telescope (3.25") in box
DescriptionOctant with an ebony frame and limb, with inlaid ivory nameplate and scale.
It has a 9.25" radius, 4 index shades, 3 horizon shades, telescope, ribbed index arm, 0-20 vernier (0 right), -5° to 107° scale, vernier screw under index arm, a Double T frame with a fixed wooden handle.
It has a 9.25" radius, 4 index shades, 3 horizon shades, telescope, ribbed index arm, 0-20 vernier (0 right), -5° to 107° scale, vernier screw under index arm, a Double T frame with a fixed wooden handle.
Signedon ivory name plate: Duren New York
on trade card in case: Chas C. Hutchinson 152 State St Opposite the Custom House, Boston. Nautical Instruments.
Inscribedon back: RAD
Historical AttributesMarked "RAD" in white paint on back of limb for Radcliff Apparatus Room
Spencer, Browning, & Company
Date: 1843-1850
Accessories: box with key, adjustment tool, telescope, eye tube, eyepiece shade
Object number: 5248
Joseph Sewill
Date: circa 1850
Accessories: Keystone mahogany box, sight tube, adjustment tool, (telescope missing)
Object number: 5334
McMillan & Talbott
Date: 1862-1873
Accessories: keystone mahogany box, sight tube( 3.25"), telescopes (2: 3.25" and 7.375"), eyepiece shade
Object number: 5305
E. & G. W. Blunt
Date: 1825-1860
Accessories: Keystone box (1996-1-0172b).
Object number: 1996-1-0172a
Riggs & Brother
Date: 1820-1840
Accessories: keystone mahogany box, telescope, eyepiece shade
Object number: 5245
