Elevation of Troughton's dividing engine, 18th century

Numéro d’image : 12901544
Elevation of Troughton's dividing engine, 18th century
Elevation of Troughton's dividing engine, 18th century, (1886). Until the 1770s, scales on scientific instruments had been marked out by skilled craftsmen in a process called 'dividing', this was partly mechanized from the 1770s when dividing engines were introduced. Originally used on small instruments, by the 1850s they were used to graduate scales on large astronomical telescopes, making hand-dividing obsolete. This particular example was completed by John Troughton, and is similar to the first successful dividing engine which was completed in about 1775 by Jesse Ramsden. Illustration from Cyclopaedia of Useful Arts, Mechanical and Chemical, Manufactures, Mining, and Engineering, by Charles Tomlinson, Volume I, (James S Virtue, London, 1886).
Licence : Droits gérés
Crédit: Science Photo Library / Heritage Images / The Print Collector
Taille de l’image : 3340 px × 5237 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

Prix pour cette image À partir de 45 €

Produit vendu
(Calendrier, Carte postale, Carte de vœux, Impression sur textile, Packaging etc)
À partir de 45 €
Usage commercial
(Affichage, Annonce presse, Annonce TV, Carte, Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 45 €
Éditorial
(Digital, Journal, Livre, Livre pratique, Magazine, Télévision etc)
À partir de 60 €
Usage non-commercial
(Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 120 €

Mots clés

;