Calculation Prints

COTTON PICKER, 1935. An African American cotton worker calculates the weight of
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TEXAS: COTTON, 1936. A plantation owners daughter checks the weight of cotton
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COTTON CHECKER, 1935. An African American cotton worker calculates the weight of
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VANNEVAR BUSH (1890-1974). American electrical engineer. Bush (left) and his M
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POMPEII: BONE COUNTERS. Carved bone counters employed by the Romans in calculation
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EGYPT: STONE WEIGHTS. Egyptian stone weights from Sinai, c2000 B. C
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EGYPT: BALANCE, c2000 B. C. A scribe keeps tally as the balance operator weighs
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CENSUS MACHINE, 1890. Operating the sorting and counting mechanism for the statistical
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CENSUS MACHINE, 1890. Punched-card counter devised by Herman Hollerith for
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ABACUS, 19th CENTURY. Line engraving
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CENSUS MACHINE, 1890. Gang-punch devised by Herman Hollerith for the statistical
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MODERN CHINESE ABACUS. In this type of abacus, beads above the dividing bar count
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ABACUS. Chinese and Roman
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CENSUS MACHINE, 1890. Keypunch for the statistical tabulation of the Eleventh U
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CENSUS MACHINE, 1890. Sorting and counting mechanism for the statistical tabulation
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JOSEPH LOUIS LAGRANGE (1736-1813). French (Italian-born) mathematician and astronomer
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CARTOON: SCIENCE, 1920. Scientists Calculating the Velocity Indicated by the Saying
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ENGLISH TAX CARTOON, 1843. After the originals in the Queens collection
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CENSUS TABULATOR, c1908. A U. S. Census Bureau tabulator and operator. Photograph, c1908
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LEWIS: EXPEDITION SUMMARY. Estimate by Meriwether Lewis of the sum necessary to
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FARMERs ALMANAC, 1793. Astronomical Calculations and other information for
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Line engraving, American, c1870
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One of Charles Babbages calculating engines. Wood engraving, 1864
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Patent drawing, 1889, for Herman Holleriths first tabulating machine used in the Eleventh U
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BALANCE, 20th CENTURY. Modern analytical balance. Line engraving, mid-20th century
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BALANCE, 20th CENTURY. Modern laboratory balance. Line engraving, mid 20th century
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BALANCE, 20th CENTURY. Modern analytical chainweight balance
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MEASURING & MARKING STONE. A mason measuring and marking stone with rulers and calipers prepatory to cutting
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ABACUS, c1870. / nLine engraving, American, c1870
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HOLLERITH TABULATOR, 1890. The electric tabulating machine devised by Herman Hollerith for tabulating the Eleventh U
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ABACUS, 19th CENTURY. Line engraving
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ANEMOMETER, 20th CENTURY. Anemometer
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ANEROID BAROMETER, 1895. Aneroid barometer
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BAROMETER, 1900. Aneroid barometer
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ABACUS. Ancient Chinese abacus. Line engraving
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ABACUS. Chinese abacus. Line engraving
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ABACUS. Ancient Roman abacus. Line engraving
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Printed to Order and Licensed for Personal Use