quintant
Date1828-1844
Inventory Number5307
ClassificationQuintant
Subject
Maker
George Whitbread
fl. 1828 - 1877
Cultural Region
Place of Origin
Dimensionsquintant: 12.8 × 27 × 23 cm (5 1/16 × 10 5/8 × 9 1/16 in.)
case: 12.3 × 32 × 27 cm (4 13/16 × 12 5/8 × 10 5/8 in.)
blue board box: 15.2 × 36.8 × 35.2 cm (6 × 14 1/2 × 13 7/8 in.)
case: 12.3 × 32 × 27 cm (4 13/16 × 12 5/8 × 10 5/8 in.)
blue board box: 15.2 × 36.8 × 35.2 cm (6 × 14 1/2 × 13 7/8 in.)
Material
AccessoriesMahogany keystone box, telescopes (3), sight tube (1), adjustment tool, tube
DescriptionThis quintant has a 7.5" radius, a brass lattice frame and limb, with an inlaid silver scale and a reinforced brass index arm with a silver vernier, which measures to 15" (0 to 15'), -5° to 150° scale. There are 3 horizon shades, an adjustable horizon mirror with 4 fixed index shades, vernier magnifier, and a fine adjustment screw.
Signedengraved on limb below scale: G. Whitbread, Maker, 11 Exmouth Strt, Commercial Rd, London
ProvenanceAlston Burr, 1964
Spencer, Browning, & Company
Date: 1845-1860
Accessories: Keystone mahogany box, sight tube, telescopes (2, 3.25" and 7"), sunshade, adjustment tool
Object number: 5317
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
William Gerrard
Date: 1862-1890
Accessories: rectangular mahogany box, telescopes (2), sight tube, eyepiece shade, eyepiece
Object number: 5263
Peter A. Feathers
Date: 1842-1874
Accessories: Square mahogany box, one shade tube (8.4 cm), one erecting telescope (8.3 cm), and one inverting telescope (18.3 cm) with four crosshairs, one pin tool
Object number: 5333
Edward Troughton
Date: 1804-1826
Accessories: Mahogany keystone box, stenciled in white paint on top and side of lid "P. Townsend"; 2 Telescopes; 1 Eyepiece
Object number: 5308
Heath & Company, Ltd.
Date: 1875-1890
Accessories: 7 1/8" telescope, 3 1/4" shade tube, 3 1/4" telescope, eyepiece shade, and mahogany box. with "4" on lid and "H" on front
Object number: 5311
Joseph Sewill
Date: circa 1850
Accessories: Keystone mahogany box, sight tube, adjustment tool, (telescope missing)
Object number: 5334
Spencer, Browning, & Company
Date: 1843-1850
Accessories: box with key, adjustment tool, telescope, eye tube, eyepiece shade
Object number: 5248
Benjamin Messer
Date: 1800-1820
Accessories: Keystone mahogany box, telescope
Object number: 5310
Riggs & Brother
Date: 1820-1840
Accessories: keystone mahogany box, telescope, eyepiece shade
Object number: 5245
Henry Duren
Date: 1852-1861
Accessories: keystone box (mahogany?), second telescope (3.25") in box
Object number: 5306
