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Newcomen-type steam engine attributed to Jean-Rodolphe Perronet, 1767. Artist: Unknown
 
Cross section of a Newcomen-type steam engine attributed to Jean-Rodolphe Perronet, 1767. Artist: Unknown
 
Henry Bessemer, British engineer and inventor, 19th century. Artist: Unknown
 
Medal commemorating the discovery of penicillin, 1945. Artist: Unknown
 
Thomas Alva Edison's first Phonograph, 1878 (1915). Artist: Unknown
 
Producing salt by evaporating natural brine by pouring it into a pit of burning charcoal, 1556 Artist: Unknown
 
Using a quadrant with a plumb bob to calculate the height of a tower by triangulation, 1551. Artist: Unknown
 
Justus von Liebig, German chemist, at work in his laboratory, mid 19th century (c1885). Artist: Unknown
 
Title page of Dialogo, by Galileo, 1632. Artist: Unknown
 
Making Edison light bulbs, 1880. Artist: Unknown
 
Bell telephone, 1882. Artist: Alexander Graham Bell Artist: Unknown
 
Solar motor by Aubrey Eneas of Boston, c1905 (c1910). Artist: Unknown
 
Glass cutter decorating table ware on a carborundum wheel, 1867. Artist: Unknown
 
Various pumps for draining ships, 1816. Artist: Unknown
 
Various pumps for raising water, 1816. Artist: Unknown
 
Boring wooden pipes, and casting and drawing iron pipes, c1825. Artist: Unknown
 
Cameramen under fire while filming in the First Balkan War, 1912. Artist: Unknown
 
Villa Tournesol, 1899. Artist: Unknown
 
Potato peeler, 1899. Artist: Unknown
 
Electric overhead monorail at Barmen-Elberfeld (now Wuppertal), Germany,1901. Artist: Unknown
 
Using a laryngoscope to aid the removal of a polyp from the throat, c1890. Artist: Unknown
 
Edward Jenner, English physician, 1800. Artist: Unknown
 
Medal commemorating the discovery of smallpox vaccination in 1796 (1800). Artist: Unknown
 
Inclined plane powered by water wheel in used on a canal, 1796. Artist: Unknown
 
Inclined planes for use on canals, 1796. Artist: Unknown
 
Double inclined plane for moving tub boats from one level to another on a canal, 1796. Artist: Unknown
 
Washing ore to extract gold, 1683. Artist: Unknown
 
Furnace for processes where protracted heat required, such as cementation, 1580. Artist: Unknown
 
Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature, 1683. Artist: Unknown
 
Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature, 1683. Artist: Unknown
 
Distillation of Nitric Acid, 1683. Artist: Unknown
 
Laboratory for refining gold and silver, showing typical laboratory equipment, 1683. Artist: Unknown
 
Von Guericke's demonstration of the strength of a vacuum, 1654 (1672). Artist: Unknown
 
Experiment designed to show that air has weight, 1672. Artist: Unknown
 
Von Guericke's demonstration of the power of air pressure, 1672. Artist: Unknown
 
Pound lock, 1664. Artist: Unknown
 
Roller bridge or inclined plane for transferring vessels from one level of a canal to another, 1737. Artist: Unknown
 
Whitby harbour, Yorkshire, at the mouth of the river Esk, c1833. Artist: Unknown
 
Chinese agriculture, 1825-1835 Artist: Unknown
 
Sending a semaphore signal using flags, c1880. Artist: Geoffrey Douglas Giles
 
Abel Pifre's solar-powered printing press, c1894 ([c1927). Artist: Unknown
 
Idea for a video-phone using neon tubes to give the picture display, c1927. Artist: Unknown
 
'The Printer's Workshop', 1568.   Artist: Jost Amman
 
Surveyors using quadrants to measure the height of a tower, c1617-c1619. Artist: Robert Fludd
 
Using astrolabes to calculate the height of a steeple, 1539. Artist: Petrus Apianus
 
Forms of astrolabe in use for surveying, 1650. Artist: Unknown
 
A surveyor's level, 1547. Artist: Unknown
 
Reiner Gemma Frisius, Dutch astronomer, geographer, cartographer and mathematician, 1539. Artist: Unknown
 
Measuring the distance of an inaccessible object by triangulation using a hinged staff, 1617-1619. Artist: Unknown
 
Finding the angular distance between two edges of a wood using a cross-staff, 1617-1619. Artist: Unknown
 
Assayer testing samples of gold or silver using a balance, 1683.  Artist: Lazarus Ercker
 
The apothecary's shop, Strasbourg, 1483.  Artist: Johannis De Cuba
 
Samuel Colt (1814-1862), inventor of the Colt revolver, 1856. Artist: Unknown
 
Colt Frontier revolver, invented by Samuel Colt (1814-62), c1890. Artist: Unknown
 
Colt Frontier revolver, invented by Samuel Colt (1814-62), c1850. Artist: Unknown
 
Leonhard Euler (1707-1783), Swiss mathematician, 1801. Artist: Unknown
 
Leonhard Euler, 18th century Swiss mathematician, 1874. Artist: Unknown
 
Leonhard Euler (1707-1783), Swiss mathematician, 1874. Artist: Unknown
 
Leonhard Euler (1707-1783), Swiss mathematician, 1835. Artist: Unknown
 
Jules Verne (1828-1905), Autour de la Lune, 1865. Artist: Unknown