In measurement, the Coggeshall slide rule, also called a carpenter's slide rule, was a slide rule designed by Henry Coggeshall in 1677 to help in measuring the dimensions, surface area, and volume of timber. With his original design and later improvements, Coggeshall's slide rule brought the tool its first practical use outside of mathematical study. It would remain popular for the next few centuries.[1]
The Coggeshall rule consisted of two rulers, each a foot (30 cm) long, which were put together in various ways. The most common and convenient arrangement was to have one of the rulers slide within a groove made along the middle of the other, like an ordinary linear slide rule, as shown in the figure below. Another form had one ruler sliding alongside the other, and a third form had a common two-foot folding ruler with a groove along one side in which a thin sliding piece was inserted that carried Coggeshall's lines.[2]
The most common form of a Coggeshall slide rule
Coggeshall first described this apparatus in a paper he released in London titled, "Timber-measure by a line of more ease, dispatch and exactness, then any other way now in use, by a double scale : after the countrey-measure, by the length and quarter of the circumference in round timber, and by the length and side of the square in squared timber, and square equal in flat timber : as also stone-measure and gauging of vessels by the same near and exact way, likewise a diagonal scale of 100 parts in a quarter of an inch, very easie both to make and use."[3]
After improving the design, he republished his work under the title "A Treatise of Measuring by a Two-foot Rule, which slides to a Foot" (1682). He released a highly modified version in 1722 titled "The Art of Practical Measuring easily performed by a Two-foot Rule which slides to a Foot." By 1767, seven revised editions had been released.[3]
Referencesedit
^Slide Rule History July 9, 2007, at the Wayback Machine. The Oughtred Society. URL accessed 2006-06-09
^ abCajori, Florian. History of the Logarithmic Sliding Rule 2006-07-09 at the Wayback Machine." Colorado College. 1909. URL accessed 2006-06-10.
External linksedit
Media related to Coggeshall slide rule at Wikimedia Commons
March 14, 2024
coggeshall, slide, rule, measurement, also, called, carpenter, slide, rule, slide, rule, designed, henry, coggeshall, 1677, help, measuring, dimensions, surface, area, volume, timber, with, original, design, later, improvements, coggeshall, slide, rule, brough. In measurement the Coggeshall slide rule also called a carpenter s slide rule was a slide rule designed by Henry Coggeshall in 1677 to help in measuring the dimensions surface area and volume of timber With his original design and later improvements Coggeshall s slide rule brought the tool its first practical use outside of mathematical study It would remain popular for the next few centuries 1 The Coggeshall rule consisted of two rulers each a foot 30 cm long which were put together in various ways The most common and convenient arrangement was to have one of the rulers slide within a groove made along the middle of the other like an ordinary linear slide rule as shown in the figure below Another form had one ruler sliding alongside the other and a third form had a common two foot folding ruler with a groove along one side in which a thin sliding piece was inserted that carried Coggeshall s lines 2 The most common form of a Coggeshall slide ruleCoggeshall first described this apparatus in a paper he released in London titled Timber measure by a line of more ease dispatch and exactness then any other way now in use by a double scale after the countrey measure by the length and quarter of the circumference in round timber and by the length and side of the square in squared timber and square equal in flat timber as also stone measure and gauging of vessels by the same near and exact way likewise a diagonal scale of 100 parts in a quarter of an inch very easie both to make and use 3 After improving the design he republished his work under the title A Treatise of Measuring by a Two foot Rule which slides to a Foot 1682 He released a highly modified version in 1722 titled The Art of Practical Measuring easily performed by a Two foot Rule which slides to a Foot By 1767 seven revised editions had been released 3 References edit Slide Rule History Archived July 9 2007 at the Wayback Machine The Oughtred Society URL accessed 2006 06 09 nbsp This article incorporates text from a publication now in the public domain Chambers Ephraim ed 1728 Cyclopaedia or an Universal Dictionary of Arts and Sciences 1st ed James and John Knapton et al a href Template Cite encyclopedia html title Template Cite encyclopedia cite encyclopedia a Missing or empty title help a b Cajori Florian History of the Logarithmic Sliding Rule Archived 2006 07 09 at the Wayback Machine Colorado College 1909 URL accessed 2006 06 10 External links edit nbsp Media related to Coggeshall slide rule at Wikimedia Commons Retrieved from https en wikipedia org w index php title Coggeshall slide rule amp oldid 1182377280, wikipedia, wiki, book, books, library,
