Circular slide rule, made by John Brown, with two brass radial arms and an stronomical quadrant engraved on the back. A spiral slide rule affords a...Circular slide rule, 1660-1680.
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...George Fullers spiral slide rule, no 849, c 1880.
During the 1920s William J. Powell led a small group of black air enthusiasts in Los Angeles. He established the Bessie Coleman Flying Club in 1929...Circular Slide Rule
This TELEX E-6B dead reckoning computer belonged to Dr. Sally K. Ride. It is a circular slide rule used in aviation for calculating factors such as...Dead Reckoning Computer Owned By Sally Ride. Creator: Telex Communications Inc..
historical mathematics equipment with slideruler - slide rule and calculator stock pictures, royalty-free photos & imageshistorical mathematics equipment with slideruler
Children using slide rules, 1967. Photograph by Bob Hope for the Daily Herald newspaper showing children at St Leonard's School, Warlingham, Surrey....Children using slide rules, 1967.
Globetrotter Series ready reckoner for calculating mileage between British towns and gallons of petrol against price. Made by Blundell Rules Ltd of...Globetrotter slide rule, 1965-1972.
Slide rule used to calculate the price of offal per ton and wheat per quarter at a flour mill. Made by Thomas Robinson & Son Ltd of Rochdale, Greater...Flour calculating slide rule, c 1910.
Circular slide rule, made by John Brown, with two brass radial arms and an stronomical quadrant engraved on the back. A spiral slide rule affords a...Circular slide rule, 1660-1680.
This slide rule made by Henry Sutton consists of fixed scales and moveable index arms. A spiral slide rule affords a long and therefore accurate...Spiral slide rule, 1663.
Sliding Gunters', or navigator's rules with a slide, such as this 2 foot example in boxwood, are comparatively rare. Most navigators preferred to...Navigation slide rule, c 1800.
Sliding Gunters', or navigator's rules with a slide, such as this 2 foot example in boxwood, are comparatively rare. Most navigators preferred to...Navigation slide rule, c 1800.
Circular slide rule made by Apps. A circular slide rule affords a long and therefore accurate logarithmic line in a small amount of space. The...Circular slide rule, c 1870.
Scale for calculating interests made by Robert Bretell Bate. The slide rule consists of paper scales on wood with one slide on each face.Bates interest scale, 1824.
Slide rule, 1815. Made by W Cary. Slide rule used to calculate exchanges of money, weights and measures.Slide rule, 1815. Made by W Cary. Slide rul
Roth's calculating machine, 1843. Invented and patented by D J Wertheimber. English currency version.Roths calculating machine, 1843. Invented
Slide rule, 1815. Made by W Cary. Slide rule used to calculate exchanges of money, weights and measures.Slide rule, 1815. Made by W Cary. Slide rul
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...Timetable or rent rule, 1850-1860.
Bate's ready reckoner, 1824. Slide rule made by Robert Bretell Bate.Bates ready reckoner, 1824. Slide rule mad
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...Excise Officers slide rule, 1759-1769.
Cylindrical form of slide rule made by McFarlane. Cylindrical slide rules, like circular versions of the instrument, were designed to get greater...McFarlane calculating cylinder, 19th century.
Scale for calculating interests made by Robert Bretell Bate. The slide rule consists of paper scales on wood with one slide on each face.Bates interest scale, 1824.
Hayward's slide rule, 19th century. Made by Hayward Brothers. A sliding scale of equivalents for weights.Haywards slide rule, 19th century. Made by
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...Calculator for treadwheel labour, 1822-1851.
Bissaker's slide rule is the earliest dated straight slide rule. The scales are mainly trigonometrical and logarithmic. The instrument is inscribed...Bissakers slide rule, 1654, and Thachers calculating instrument, 1881.
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...Two slide rules, 1663 and 1881.
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...Henry Suttons slide rule, 1663.
Amedee Mannheim developed the standardised modern version of the slide rule that was used up until the invention of calculators. Mannheim...Amedee Mannheim, French mathematician, c 1901.
keufel & esser deci-lon model 68 1130 slide rule - slide rule and calculator stock pictures, royalty-free photos & imagesKeufel & Esser Deci-Lon Model 68 1130 Slide Rule
a simple line drawing of a calculator - slide rule and calculator stock illustrationsA simple line drawing of a Calculator
a slide rule or ruler and a calculator and marbles. using an old fashioned methods to make mathematical calculations. - slide rule and calculator stock pictures, royalty-free photos & imagesA slide rule or ruler and a calculator and marbles. Using an old fashioned methods to make mathematical calculations.
a slide rule or ruler. using an old fashioned method to make mathematical calculations. - slide rule and calculator stock pictures, royalty-free photos & imagesA slide rule or ruler. Using an old fashioned method to make mathematical calculations.
This slide rule belonged to Dr. Sally K. Ride. Before pocket-sized electronic calculators became available in the 1970s, slide rules were used as an...Mathematical Slide Rule Owned By Sally Ride
This chemical slide rule used for determining the mass of atoms and molecules belonged to Dr. Sally K. Ride. Before pocket-sized electronic...Chemical Slide Rule Owned By Sally Ride
Fuller's spiral logarithmic slide rule, 1879. Fuller's spiral logarithmic slide rule, 1879. Made by W F Stanley. In a mahogany box with instruction...Fuller's spiral logarithmic slide rule, 1879.
messy desk office with many objects all over. still life - slide rule and calculator stock pictures, royalty-free photos & imagesMessy desk office with many objects all over. Still life