Smithsonian - National Museum of American History, Behring Center

 
Physical Sciences Collection - Surveying and Geodesy

Browse Makers | Browse Instruments | Index
 

Browse by Maker
 

Adams
AGA
Ainsworth
Aloe
Alpha Electronics
Arnold
Balbreck
Balch
Bamberg
Bate
Beckman
Beers, J. M.
Beers, S.
Beetle
Benchmark
Berger
Blattner & Adam
Blunt
Bosworth
Bowles
Brander & Höschel
Brandis
Brown
Buff
Buff & Berger
Butenschon
Casella
Chandlee
Colton
Cubic
Cubitape
Danner
Davenport
Dean
Delamarre
Delure
Dietzgen
Dod
Dollond
Draper
Electrotape
Ellicott
Elliott
Ertel
Fauth
Foster
Gambey
Geodimeter
Gilbert
Graff, Washburne & Dunn
Green
Greenough
Gurley
Hagger
Hanks
Harland
Heath & Wing
Heisely
Helffricht
Heller & Brightly
Hewlett-Packard
Houghton
Jones (Liverpool)
Jones (London)
Jones, W. & S.
Kahler
Kern
Keuffel & Esser
King
King, G.C.
Knox & Shain
Kolesch
Kübel
Lamb
Laser Systems & Electronics
Lerebours
Lietz
Lingke
Lutz
Lynch
Magnavox
Mahn
Megarey
Meneely
Meneely & Oothout (see Meneely)
Merrill & Davis
Meurand
Morin
Patten
Pfister
Phelps & Gurley (see Gurley)
Pike
Pool
Potts
Precision International
Prentice
Prince
Queen
Randolph
Ranger
Reed
Repsold
Rittenhouse, B.
Rittenhouse. D.
Rittenhouse & Evans
Roach
Roach & Warner (see Roach)
Saegmuller
Sala
Secoes
Secretan
Shaw
Shilling
Simpson
Sisson
Spectra-Physics
Stackpole
Stancliffe
de Steur
Tellurometer
Troughton & Simms
Voigt
Wall
Wanschaff
Watts
Weiss & Heitzler
White, D.
White, P.
Whitney
Wild
Wright
Würdemann
Young
Zeiss

 

Blunt

Edmund March Blunt opened a chart and instrument store in New York in 1811. His sons, Edmund and George William Blunt, trading as E. & G. W. Blunt, opened a similar store in 1824. In the early days, most of these instruments were imported. An advertisement from 1837 states: “One of the firm is now in England superintending the manufacture of Theodolites, Transit Instruments, etc.,–and any orders for Instruments not now on hand, will be forwarded to him, and executed promptly.” In the mid-1850s, after having built a dividing engine, the Blunts advertised that they could “divide Astronomical and Nautical Instruments to a degree of precision which they will guarantee to be equal to the best of foreign make.” The firm, with its dividing engine, became Blunt & Nichols (in 1866), Blunt & Co. (in 1868), Eckel & Imhoff (in 1872), and H. A. Kolesch (in 1885).

Ref: Harold Burstyn, At the Sign of the Quadrant (Mystic, Ct., 1957).

Description of E. & G. W. Blunt’s Dividing Engine (New York, 1857).

Collection:

Theodolite