Burette is a device for delivering a variable, known volume of liquid. In their earliest forms, such as the type designed by Gay-Lussac for his...
Made in boxwood by Dring and Fage of Tooley Street, London. William Hyde Wollaston , the English chemist, was a pioneer of powder metallurgy and...
This selection of items includes Wollaston's slide rule of chemical equivalents and samples of platinum, palladium and rhodium with metal dies used...
Made in boxwood by Dring and Fage of Tooley Street, London. William Hyde Wollaston , the English chemist, was a pioneer of powder metallurgy and...
William Hyde Wollaston was a pioneer of powder metallurgy and discovered two new metals, rhodium and palladium. Wollaston developed this slide rule...
Roth's calculating machine, 1843. Invented and patented by D J Wertheimber. English currency version.
Slide rule, 1815. Made by W Cary. Slide rule used to calculate exchanges of money, weights and measures.
Rent rules, such as this example made by Dring and Fage of Tooley Street, London, were used by dock companies to calculate the number of days for...
This 12 inch long Excise Officer's slide rule is made of boxwood, and has four sliders, under one of which is inscribed; 'Edwd Roberts Maker in Dove...
Cylindrical form of slide rule made by McFarlane. Cylindrical slide rules, like circular versions of the instrument, were designed to get greater...
Scale for calculating interests made by Robert Bretell Bate. The slide rule consists of paper scales on wood with one slide on each face.
Hayward's slide rule, 19th century. Made by Hayward Brothers. A sliding scale of equivalents for weights.
The spiral slide rule was invented to increase the length of the scale, and hence the accuracy, of the conventional slide rule. The Fuller's...計數機
This instrument is constructed on the same principle as a slide rule. The treadwheel was a common method of punishment in 19th century prisons. The...
Bissaker's slide rule is the earliest dated straight slide rule. The scales are mainly trigonometrical and logarithmic. The instrument is inscribed...
The earlier slide rule of Henry Sutton consists of fixed scales and moveable index arms. A spiral slide rule affords a long and therefore accurate...
Henry Sutton was one of the best known mathematical engravers of his day. Renowned for his accuracy he was in great demand for drawing diagrams for...
Engineer's slide rule, c 1800. This boxwood slide rule shows the logarithmic scale and was made by W & S Jones. The most important development of the...
This slide rule was part of the contents of the private workshop of James Watt , the Scottish engineer and instrument maker, in his house in...
This slide rule was part of the contents of the private workshop of James Watt , the Scottish engineer and instrument maker, in his house in...
This slide rule was part of the contents of the private workshop of James Watt , the Scottish engineer and instrument maker, at his house in...
This slide rule was part of the contents of the private workshop of James Watt , the Scottish engineer and instrument maker, in his house in...
This slide rule was part of the contents of the private workshop of James Watt , the Scottish engineer and instrument maker, in his house in...
This slide rule was part of the contents of the private workshop of James Watt , the Scottish engineer and instrument maker, in his house in...
This slide rule was part of the contents of the private workshop of James Watt , the Scottish engineer and instrument maker, in his house in...
This slide rule was part of the contents of the private workshop of James Watt , the Scottish engineer and instrument maker, in his house in...
Pilot balloons were used as tracers for wind in the upper air, and to carry lightweight meteorological instruments. They would be monitored by...
Pilot balloons were used as tracers for wind in the upper air, and to carry lightweight meteorological instruments. They would be monitored by...
This instrument is a specialised circular slide rule, on which magnetic heading, leeway, deviation, and variation may be entered and from which a...磁石
Engraving of William Oughtred who wrote extensively on mathematics. In 'Clavis Mathematica' , a textbook on arithmetic and algebra, Oughtred...
Amedee Mannheim developed the standardised modern version of the slide rule that was used up until the invention of calculators. Mannheim...
