Improvement to Palmer's endless self-computing scale and key : adapting it to the different professions, with examples and illustrations for each profession, and also to colleges, academies and schools : with a time telegraph making, by uniting the two, a computing telegraph / by John E. Fuller.

  • Fuller, John E. (John Emery), 1799-1878
Date:
1851
Catalogue details

Licence: Public Domain Mark

Credit: Improvement to Palmer's endless self-computing scale and key : adapting it to the different professions, with examples and illustrations for each profession, and also to colleges, academies and schools : with a time telegraph making, by uniting the two, a computing telegraph / by John E. Fuller. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    IMPROVEMENT TO PALMER'S ENDLESS SELF-COMPUTING SCALE AND KEY; IDirriNO IT TO THE DIFFERENT PROFESSIONS, WITH EIAMILES AND ILLUSTRATIONS FOR EACH PROFESSION ; AND ALSO TO COLLEGES, ACADEMIES AND SCHOOLS, WITH A TIME TELEGRAPH, MAKING, BY UNITING THE I WO, A COMPUTING TELEGRAPH. BY JOHN E. FULLER. NEW-YORK : PRINTED FOR THE PUBLISHER 1851. PALMER'S ENDLESS SELF-COMPUTING SCALE. The proprietors of this invaluable work, beg leave to pre- terit the public with the following notice. This Scale (the result of three years' incessant labor) is designed as an assistant in all arithmetical calculations. The simplicity, rapidity, and accuracy of its results, have as- tonished our best mathematicians. It consists of a loga rithmic combination of numbers, arranged in two or more circles, one of which is made to revolve within the other; which process constantly changes the relation of the figures to each other, and solves an infinite variety of problems. Its advantages are,— 1st. A complete saving of mental labor ; for, by the use of this Scale, the most intricate calculations are but a pleasurable exercise of the mind. 2d. A great saving of time. Computations requiring from three to four days, are wrought out by this Scale in the incredible short space of one minute. 3d. Complete accuracy. The results of the computations on this Scale, are infallible. Errors are entirely out of the question, except through sheer carelessness. 4th. Mental improvement. By this Scale, a knowledge of the philosophy of numbers, and their relation to each other, is soon obtained. So that, in a little time, many of the common calculations are wrought out by the mere exercise of the mind. Brockport, Feb. 19, 1842 I have carefully examined The Endless Self-Computing Scale, by Mr. Aaron Pa'mer; and, without hesitation, give it as my opinion, that it will be found a very useful invention. AL the problems in arithmetic can be readily solved upon it, and most of them with great expedition, particularly the rules for computing interest for months and days, at any per cent., the Rule of Three, and Fractions. In the apportionment of County, Town, and School Taxes, it will be found almost in- valuable, as it requires to be set but once, to show each man's tax. JULIUS BATES, M. A. Prim ipal uf Collegiate Institute Cambridge, Oct. 20, 1843. I have examined Mr. Aaron Palmer's ''Endless Self-Com- puting Scale; it is simple and most ingenious, and I cheer- fully concur in Mr. Julius Bates's judicious recommendations of its utility. BENJAMIN PEIRCE, Perkins Professor of Astronomy and Mathematics in Harvard University. Boston, October 24, 1813 Mr. Palmer's Self-Computing Scale is certainly a very ingenious arrangement of numbers, and it will save a great amount of time in the hands of those who have computing to perform, whatever be the subject of the computation. FREDERICK EMERSON, Author of the North American Ant: I heartily concur in the above recommendation. WILLIAM B. FOWLE. XMe Teacher of the Female JSLmitorial School. Boston Boston, October 23, 1S43 Mr. Aaron Palmer, Sir: Your Self-Computing Scale appears to me an exceedingly useful invention. I shall be glad to possess one of them, as it will save me much labor, and I doubt not that many persons will find the same advantage in its use. Respectfully your servant, JOHN S. TYLER, .lotrjry Public and Insurance Broker 6 Boston, October 24, 1643. I have examined Mr. Aaron Palmer's Self-Computing Scale ; it strikes me as being a very convenient labor-saving machine, and that it will be highly useful in calculating interest, general average, or dividends on a bankrupt's estate, and for other similar purposes. S. E. SEVVALL Counsellor at Law NORTHERN DISTRICT OF NEW YORK. TO WIT: Be it Remembered, That on the eleventh day of December, Anno Domini, 1843, JOHN CUTTS SMITH, of the said District, has deposited in this Office the title of a Book, the title of which is in the words follow- ing, to wit: A Key to the Endless. Sell computingSca_e, showing its Application to the different Rules of Arithmetic, &c. By Aaron Palmer. The right whereof he claims as proprietor. In conformity with an Act of Congress entitled An Act u> amend the several Acts respecting Copy Bights. [A true copy ol record.; ANSON LITTLE, Clerk of the DiUrict. STEREOTYPED BY GEORGE A. CURTIS, ■■W ENGLAND TYPE AND STEREOTYPE FOUSDRT, BOSTON RECOMMENDATIONS Of THE ENDLESS SELF-COMPUTING SCALfc. Rochester, Jan. 19, 1842. The Self-Computing Scale, by A. Palmer, is a very in- genious and interesting instrument for performing most of the operations in arithmetic. The principle is very plain ; and the accuracy, and certainty, and rapidity of the results are very striking C. DEWEY, Principal of Collegiate Institute. Rochester, January 19, 1842. Having particularly examined Mr. Palmer's Self-Com- uuting Scale, I fully concur in the above testimonials of Dr. Dewey. SAMUEL LUCKEY, D. D. Attica, March 5, 1842. From an examination of the Self-Computing Scale, by Mr. Palmer, I can most cheerfully concur in the above recom- mendations, and hope it may be introduced into our schools and academies. E. B. WALSWORTH, Principal of Attica Academy Buffalo, April 5, 1842. We have examined tne above mentioned Scale, and concur in the certificate of Professor Dewey. W. K. SCOTT, Civ. Eng. R. W. HASKINS, M. A. I have examined The Endless Self-Computing Scale < f Mr. Palmer, and with pleasure express my high admiration of it. It is constructed on the only principle acknowledged by scientific men, since the invention of Logarithms, ai to such purposes. Over all sliding Logarithmic Si possesses a vast superiority, both in facility of use and ac- curacy of result. For this superiority, it is indebted to its circular form. With a diameter of about eight inehi equivalent to a common sliding scale of four feet with its slide of the same length, making when drawn out, a rod of about eight feet in length. It will be seen lliat its accurac] proportionably greater, as a circle can be constructed more exact than such a scale. G. C. WHITLOCK, Professor of Mathematics and Natural Science in Genessee Wesleyan Seminary. Mr. Aaron Palmer, Sir: I have taken much pleasure in testing the i your Self-Computing Scale, by examples from nearly all the arithmetical rules. I am particularly struck with its great facility and accuracy in computing interest, apportioning divi- dends, and performing proportions generally. From the best sxamination I have been able to give it, I think it at once a most simple and wonderful invention; and I am confident, that when perfected, it will come rapidly into extensive public use, and wUl prove of singular benefit to those having occa- sion to make frequent computations ir> Bankruptcy, Insol- vency, Insurance, Averages, Taxation, and the like branches of business. AMOS B. MERRILL, 10 Court Street, Boston.