The patent was issued by the united states patent office on august 9, 1904. The link below will take you to dereks virtual slide rule site. In a separate calculation you find the order of magnitude by combining the powers of 10. The slide rule, also known as a slipstick,is a mechanical analog computer. There is no way of indicating the position of the d. Yet another virtual slide rule explanation gallery index back to antiquark copyright 2005 derek ross. The slide rule is used mainly for multiplication and division, and also for scientific functions such as roots, logarithms and trigonometry, but usually not for addition or subtraction. Ron manley, on his website presents an identical slide rule along with a convincing argument that this rule is an early nestler. Unfortunately, i dont have a copy of the revised edition, but even this early work has a lot going for it. The purpose of this website is to make available engineering. To do a calculation with a slide rule you reduce all numbers to scientific notation with 24 digits then use the slide rule to perform the basic operations. The only maker that still produces classic slide rules is the japanese maker concise. Outofprint material that may be useful when working on existing facilities.
There is also a version as a word document which is smaller 2040 kb. Vintage diwa 6inch slide rule, made in denmark, imprinted. All other scales on a slide rule are referenced to the c and d scales. Im not an expert im also not old enough to have learned slide rule use in school. A history of the logarithmic slide rule and allied instruments. Sphere researchs slide rule universe, build your own. All the relevant measurements and dimensional data for the api 6a flange. It is used primarily for multiplication and division, and also. On the reverse side of the slide, the s, l, and t scales appear, and the slide may be re. Slide rule simple english wikipedia, the free encyclopedia. You can also check out my circular and combination slide rules page for some examples. The rule has engraved plastic scales pinned to a wooden base, with a singleline glass cursor in a metal frame. An easy introduction to the slide rule asimov, isaac.
Line up the 1 on the left hand side of sliding scale c with 2 on frame scale d. The a, d, and k scales are on the body, the b, and c scales on the slide. If you use a different pdf reader, your procedures should be quite similar. The front cover features the logo, the title, a stylised diagram of a slide rule and a list of the models covered by the instructions as follows. They have a standardised set of markings called scales. The slide rule was strong in conversions with a constant factor.
A patent print poster of an engineers slide rule invented by leon walter rosenthal. Mannheim slide rule 1850 faber castell 283n nestler 23r mannheim issac newton put 3 scales in parallel in 1675 to compute cubes. Ci1st number to multiply, goes over top d2nd number to multiply. Ron manleys slide rule site take the instructions link.
An outstanding design feature of this range is the introduction of end caps for. Each of these rules is the subject of one to four chapters that expand on the rule and offer numerous examples and illustrations in both verbal and graphic form. The scales ad are labeled on the lefthand side of the slide rule. The metal window is inserted over the slide rule to act as a place holder. Mannheim slide rule 1850 faber castell 283n nestler 23r mannheim issac newton put 3 scales in parallel in 1675 to compute cubes, and proposed the cursor in 1677, but was ignored. Youll find more information about their current circular slide rule offerings at their website. The calculating rule instructions comprise a four side folded pamphlet measuring approx 7 58 x 10 38 inches, printed in black on light green paper. A duplex slide rule had scales on both sides, the usual case for engineering slide rules. In 1950, post brought out an american version of the bamboo slide rule manufactured by hemmi of japan, the versalog.
The slide rule, also known colloquially in the united states as a slipstick, is a mechanical. A cursor is fixed in the center of the window to allow for accurate readings. Public domain documents that have limited availability. Description download cameron flange slide rule free in pdf format. The slide rule, or slipstick, is a mechanical analog computer. Rather than dealing with elaborate rules for positioning the decimal point, i was taught to first scale the factors and deal with the. My slide rules this gallery is in the process of some updating, as many of the scans are from the 1990s, when my way of taking pictures was to put the slide rule on a flatbed scanner and hope it came out reasonably clearly. Another identical rule can, however be seen on the international slide rule museum website originating from a. It has a patent number in the well, dr patent 173660. Older, usually conservative methods of solving technical problems. Two large display spaces on each side of the chart for contact information, photos, illustrations and standard industry reference information. The number of scales on a slide rule vary depending on the number of mathematical functions the slide rule can perform. Instructions for using a slide rule project gutenberg.
It is unfortunate that, for some reasons not easy to see, the slide rule is sometimes regarded as a difficult instrument with which to. Simple paper slide rule michael gasperi 2012 fold fold cut cut cut 1. An outstanding design feature of this range is the introduction of end caps for holding the two stocks rigidly in. Design, build, and archive presentations in the engineering and technical fields 1st edition by nathanskelly. Because of pdf formatting, you must print it to standard 8.
All about api flanges, hubs and clamps, slide rules. Npr ed before the smartphone, the laptop and the pocket calculator, there was a. Virtual flange slide rule for android apk download. Another example of a simple slide rule would be the e6b flight computer. The first circular slide rule on this link uses a cd case as the basis for the slide rule. The slide rule the book, written by florian cajori, is the standard work on the early history of the slide rule.
Erics where to buy slide rules page erics slide rule site. Thompsons original 1930 slide rule book was also updated in a second 1952 edition the standard manual of the slide rule that many collectors feel is the standard slide rule reference text. Here derek has put together a number of working slide rules that can be used for calculations and demonstrations on the computer. Angle divisions were originally in minutes, but decimal divisions gradually became predominant, in decitrig slide rules. Learn to operate and care for your slide rule with these on line manuals and directions. The slide rule and other instruments which give the same facilities for rapid calculations, are covered by the term mechanical calculation. A book from the same era as my recently acquired slide rule was the best introduction i could have asked for. May 18, 2016 the first of a series of videos explaining the basic slide rule. Bissaker slide rule 1654 circular slide rule king pocket calculator 66 sclales thacher calculator 30 ft. Obviously most of us arent going to use a slide rule for day to day math in jobs or school, but sometimes its interesting to see how these old tools work.
Since you used the 1 at the left hand side of the scale, the product is between 1 and 10. There are a number of sources of manuals for slide rules, they were usually supplied with slide rules when purchased although over the years they have become detached from the slide rule and are now lost. The slide rule is used mainly for multiplication and division, and also for scientific functions such as roots, logarithms and trigonometry, but usually not for addition or subtraction there are many different styles of slide rules. Download cameron flange slide rule free in pdf format. All of the authors were listed as associate or assistant professors of mathematics at the us naval academy. Multiplying with the slide rule suppose you want to multiply 2x4. All about api flanges, hubs and clamps, slide rules, oilfield. Slide rule universe take the learn to use and clean them link. Linear slide rules service slide rule scale length 10 approx, overall length 14 made in australia little is known of the company that manufactured this service slide rule in sydney, australia, probably in the 1950s. This slide rule is the preferred reference tool in the field for its fast, accurate answers to sizing questions. We have something for everybody, even a swap and sell area for visitors.
Made in germany condition is used dispatched with royal mail paypal and uk only please. The slide rule also does not tell you the sign of your result. This watch is fitted with a rotary type slide rule for rapid calculations and conversion of various essential flight data required by pilots. It is unfortunate that, for some reasons not easy to see, the slide rule is sometimes regarded as a difficult instrument with which to become proficient. Multiplying with the slide rule iowa state university.
Flange slide rule program flange dimensions and methods of identification segmented dual completion flange dimensions. This slide rule has been manufactured after a comprehensive study of the functional requirements involved and forms part of a new range designed for maximum efficiency. This page gives my own templates see below for constructing a circular slide rule, with scales c, ci, d, a, and k. Compared to a calculator, a slide rule is severely limited in its accuracy. Thus, from this table, the actual history of the slide rule is not surprising. I particularly like the simulation of the pickett n 525es, a statistical slide rule and one that is uncommon. Slide rule for sale in uk 68 secondhand slide rules. These instructions came with my a w faber 378 electro rule dated c191012, and comprise 2 parts.
The first of a series of videos explaining the basic slide rule. The cursor travels the full length of the body, and the hairline crosses these scales for direct comparison. Indeed, the scores of figures in the book are themselves. Reading the slide rule scales ia the decimal point d. I typed and scanned this in from one of the manuals that came with my n4es slide rule. Buy a slide rule from our extensive on line marketplace, with restored classics, amazing new in the box rules, and low cost first student rules. This rule also came with electro instructions, detailed here. Unfortunately on both counts, neither quite lives up to former hemmi standards. Flange weld neck dimensions flange weights, api spec 6a flanges flange weights, api spec 17d flanges. Tape overlapping cursor ends on back simple paper slide rule by. Basic slide rule operation for scientists and engineers 10. Simpson departmentof physical sciences and engineering princegeorges communitycollege november 29, 2010 1 introduction before electronic calculators became widely available ar ound 1975, students, engineers, and scientistsperformed mathematical calculations using an instrument called a sliderule. The sterling slide rule has standard a, b, c, c, d, and k scales. The mark 2 navigators slide rule has gauge points see 29 and 30 to facilitate the conversion of liters to us gallons, and meters to feet.
Oughtred society slide rule reference manual the oughtred. See more ideas about slide rule, old computers and mechanical calculator. You can enter and read a number typically to two or three decimal digits only. I taught evening classes in solid state circuit design at our local community college from 1967 to 2000, and during the pre calculator days, around 1974, i assumed my students had a firm grasp on slide rule operation. Additionally, the slide rule does not tell you where the decimal point is located in the answer.
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