Bancks and Son
Bancks and Son. Instrument makers and Opticians to His Majesty
119 New Bond Street, London (1820-27).
Robert Bancks (or Banks) was an instrument maker to George IV, and had also made instruments for scientists such as Robert Brown.
Bardou
Bardou firm was founded by D. F. Bardou in 1818 and was one of the most popular small telescopes constructor at the end of the 19th c.
Berthoud, Louis
Louis Berthoud (+ 1813) was the best French clockmaker of the beginnings of the 19th c.
Boulitte, G.
G. Boulitte Ingénieur-constructeur, 15-12 rue Babillot, Paris
Ancienne Maison Verdin
Made mainly medical instruments circa 1910-1930
Brillé
The French maker Brillé constructed in 1910 the famous electric pendulum Brillé which distibuted time to periphery clocks is factories, observatories etc.
Casella, L.
L. Casella, Instruments for Observatories, explorers, travelers, Army and Navy.
London
Maker to the admiralty
Central Scientific Company
Central Scientific Company was founded in 1900 in downtown Chicago. It was formed out of what was left of the Olmstad Scientific Company.
Central Scientific manufactured and distributed science teaching equipment for schools, colleges, and universities by catalog mail order. The trademark "CENCO" was used from 1909 onwards.
Cooke T. and Sons
T. Cooke & Sons, York & London (and later "and Cape Town")
T. Cooke was born in 1807 in Allerthope, Yorkshire. He was born to a poor family and, having first to overcome many difficulties, managed to study mathematics and optics. At the age of 22 he manufactured his first achromatic lens. This success led him to establish a small optics firm in York. His meticulous, high-quality work made him a famous telescope maker. After his death in 1868 the firm was continued by his sons.
Dobbie McInnes
Dobbie McInnes Glasgow, Liverpool and South Shields,
Makers to the Admiralty
The firm appears as:
Dobbie McInnes Ltd, from 1903 until 1921, and then again from 1937 until the late 1950s.
Dobbie McInnes & Clyde Ltd, from 1921 until 1937.
Duboscq, Jules
Duboscq was Soleil's successor.
"Jean-Baptiste-François Soleil (1798-1878) ingénieur-opticien français fonda en 1819 la maison Soleil, située au 35, rue de l'Odéon à Paris, spécialisée dans la fabrication des instruments d'optique dont les destinataires sont les grands savants de l'époque Fresnel, Arago, Foucault, Babinet.
Ducretet
Eugene Ducretet (1844 -1915) was a scientific instrument maker, opening his first shop in 1864. He made galvanometers, Whimshurst machines, Tesla apparatus, Crookes tubes, etc. Ducretet also made telegraph instruments including keys and Morse registers. The Ducretet name is associated with the early development of wireless in France; he was an early experimenter and maker of wireless apparatus. Descriptions of his experimental Ducretet and Roger oil break spark keytransmitters and receivers are shown in Electrical World and Engineer in 1899.