| Title | : | Thacher's Calculating Instrument: Or Cylindrical Slide Rule (1884) |
| Author | : | Edwin Thacher |
| Language | : | en |
| Rating | : | 4.90 out of 5 stars |
| Type | : | PDF, ePub, Kindle |
| Uploaded | : | Apr 06, 2021 |
Read Online Thacher's Calculating Instrument: Or Cylindrical Slide Rule (1884) - Edwin Thacher file in PDF
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The ordinary slide rule, which is a development of gunter's scale invented many years ago, has been found of great utility in the solution and checking of a wide variety of problems.
Thacher's calculating instrument the instrument consists of a cylindrical slide provided with a knob at each end, and which admits of both rotary and longitudinal movement, within an open framework or envelope of equidistant bars of triangular section.
Thacher's calculating instrument - edwin thacher, 1892 - first edition. This instruction manual is for the thacher calculating instrument. Thacher's calculating instrument - edwin thacher, 1917 - this instruction manual is for the thacher calculating instrument. Professor fuller's calculators - george fuller -professor fuller's calculators.
Edwin thacher first patented the idea for this slide rule / calculator in 1881 in england. The thacher calculator has a near unique sliding drum design whose scales total over 30’ long. The idea was an immediate success with the scientific and engineering communities.
The thacher is a high precision slide rule patented in 1891 with the thacher calculating instrument, however the scales are 30 feet long, so they will give.
Edwin thacher thacher's calculating instrument or, cylindrical slide-rule this book, calculating instrument or, cylindrical slide-rule, by edwin thacher, is a replication of a book originally published before 1884.
Edwin thacher (1839 - 1920) was an american bridge engineer who designed a cylindrical slide rule to assist in his calculations when designing railway.
Thacher's calculating instrument or cylindrical slide-rule: containing complete and simple rules and directions for performing the greatest variety of with unexampled rapidity and accuracy paperback – january 1, 2010.
Thacher's calculating instrument equivalent of a 360 long slide rule, allows calculations to a precision of 1:10,000. Fowler's magnum calculator a multi-scale circular slide rule.
Thacher divided a long slide rule into a number of overlapping seg- thacher's calculating instrument or cylindrical slide-rule.
It was cylindrical and could slide back and forth, giving it the power of several individual slide rules. It could do multiplication and division, and calculate interest, roots and powers of numbers to about five significant figures.
Edwin thacher (1839 - 1920) was an american bridge engineer who designed a cylindrical slide rule to assist in his calculations when designing railway bridges.
Thacher's calculating instrument: or cylindrical slide rule (1884) by edwin thacher reprinted by kessinger publishing. A guide to the gauge marks found on slide rules by panagiotis venetsianos.
Excerpt from thacher's calculating instrument, or cylindrical slide-rule: containing complete and simple rules and directions for performing the greatest variety of useful calculations with unexampled rapidity and accuracy.
Thacher's patent calculation instrument or cylindrical slide-rule. Containing complete and simple rules and directions for performing the greatest variety of useful calculating with unexampled rapidity and accuracy.
By the use of this instrument the drudgery of calculation is avoided, and the relief to the mind.
Mahogany cylinder with numbers printed on accordion folded coated paper; in wooden case with manufacturer users manual. Dimensions: height 5 1/4 inches, width 22 inches (without box) condition*: good, overall light wear consistent with age and normal use; one of the paper rulers separating from wood, spinning tight; box having nicks, scuffs and scratches; instruction manual cover.
They could increase their speed and accuracy with the thacher calculator. Placing the thacher functioned like an 18-meter slide rule for calculations up to five.
27 oct 2017 bid on thacher's calculating instrument for sale in auction.
The primary tool used by surveyors in north america from the 1600s through a number of nonelectric calculators, including thacher's calculating instrument, calculating instruments, calculators replaced slide rules, and compute.
300 100829 f/s concise ruler circular slide rule stadia calculator 100850 f/s with case original box, manual thacher's calculating instrument or cylindrical.
Bri-cal compound addition money calculating machine curta type i calculating machine thacher's calculating instrument (with pleated slide rule).
The thacher calculating instrument appeared after 1880 and was produced for a number of decades w this is a look at a truly unique cylindrical slide rule.
This cylindrical slide rule was designed to perform exact mathematical calculations for engineers, architects, actuaries,.
Patented by edwin thacher in 1881, this complex slide rule could perform various.
4012 (type 2) thacher's calculating instrument, desktop long-scale.
Slide rules were the primary tool for performing multiplication, division and other logarithmic ruler kl - 1 round lineup calculator slide rule vintage ussr.
Calculating instrument or, cylindrical slide-rule [thacher, edwin] on amazon.
Ny, late 19th century the instrument raised on a wood stand mounted with directions and supported by two circular brass arms.
Detail of edwin thatcher's 1881 slide rule, which is 57 cm from knob to knob engineer gift, electrical engineer, measurement, calculator, engineers' tools.
This is a thacher's calculating instrument in exceptionally fine overall condition, complete with case and instruction manual. In 1881, edwin thacher, an american bridge engineer patented this cylindrical slide rule, 4 inches in diameter and 18 inches long.
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Thacher's calculating instrument or cylindrical slide-rule: containing complete and simple rules and directions for performing the greatest variety of useful calculations with unexampled rapidity.
12 apr 2012 this is a look at a truly unique cylindrical slide rule. The thacher calculating instrument appeared after 1880 and was produced for a number.
To assist in his calculations, he designed a cylindrical slide rule. Thacher's rule, though it fit on a desk, was equivalent to a conventional slide rule over 59 feet long.
Thacher's calculating instrument is a advanced slide rule for performing a great variety of useful arithmetical calculations with rapidity and accuracy.
'thacher's calculating instrument' is a cylindrical slide rule that can be used to calculate results by adding and subtracting logarithms.
Keuffel and esser thacher's calculating instrument 1740 cylindrical 1984.
Comtaining complete and simple rules and directions for performing the greatest variety of useful calculations with unexampled rapidity and accuracy.
Compra thacher's calculating instrument or cylindrical slide-rule: containing complete and simple rules and directions for performing the greatest variety of with unexampled rapidity and accuracy.
Patented in 1881, production of this 20-scale cylindrical slide rule was assumed by keuffel and esser.
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