Bissaker slide rule 1654 circular slide rule king pocket calculator 66 sclales thacher calculator 30 ft. It is used primarily for multiplication and division, and also. The slide rule, also known colloquially in the united states as a slipstick, is a mechanical. Made in germany condition is used dispatched with royal mail paypal and uk only please. Simple paper slide rule michael gasperi 2012 fold fold cut cut cut 1. Erics where to buy slide rules page erics slide rule site. Instructions for using a slide rule project gutenberg. Learn to operate and care for your slide rule with these on line manuals and directions. Older, usually conservative methods of solving technical problems. This watch is fitted with a rotary type slide rule for rapid calculations and conversion of various essential flight data required by pilots. The first circular slide rule on this link uses a cd case as the basis for the slide rule. Ron manley, on his website presents an identical slide rule along with a convincing argument that this rule is an early nestler.
It has a patent number in the well, dr patent 173660. A duplex slide rule had scales on both sides, the usual case for engineering slide rules. 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. Flange slide rule program flange dimensions and methods of identification segmented dual completion flange dimensions. A cursor is fixed in the center of the window to allow for accurate readings. 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. A book from the same era as my recently acquired slide rule was the best introduction i could have asked for. Angle divisions were originally in minutes, but decimal divisions gradually became predominant, in decitrig slide rules. 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. This page gives my own templates see below for constructing a circular slide rule, with scales c, ci, d, a, and k.
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. May 18, 2016 the first of a series of videos explaining the basic slide rule. Reading the slide rule scales ia the decimal point d. Additionally, the slide rule does not tell you where the decimal point is located in the answer. Yet another virtual slide rule explanation gallery index back to antiquark copyright 2005 derek ross. I typed and scanned this in from one of the manuals that came with my n4es slide rule. All about api flanges, hubs and clamps, slide rules. The rule has engraved plastic scales pinned to a wooden base, with a singleline glass cursor in a metal frame. This slide rule is the preferred reference tool in the field for its fast, accurate answers to sizing questions. Slide rule universe take the learn to use and clean them link. Design, build, and archive presentations in the engineering and technical fields 1st edition by nathanskelly. Another identical rule can, however be seen on the international slide rule museum website originating from a.
In 1950, post brought out an american version of the bamboo slide rule manufactured by hemmi of japan, the versalog. Unfortunately on both counts, neither quite lives up to former hemmi standards. Line up the 1 on the left hand side of sliding scale c with 2 on frame scale d. Slide rule for sale in uk 68 secondhand slide rules. 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. 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. An easy introduction to the slide rule asimov, isaac. The only maker that still produces classic slide rules is the japanese maker concise. 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. These instructions came with my a w faber 378 electro rule dated c191012, and comprise 2 parts.
Unfortunately, i dont have a copy of the revised edition, but even this early work has a lot going for it. See more ideas about slide rule, old computers and mechanical calculator. The patent was issued by the united states patent office on august 9, 1904. The first of a series of videos explaining the basic slide rule. Mannheim slide rule 1850 faber castell 283n nestler 23r mannheim issac newton put 3 scales in parallel in 1675 to compute cubes. It is unfortunate that, for some reasons not easy to see, the slide rule is sometimes regarded as a difficult instrument with which to. Outofprint material that may be useful when working on existing facilities. Because of pdf formatting, you must print it to standard 8. You can also check out my circular and combination slide rules page for some examples. Oughtred society slide rule reference manual the oughtred. Ron manleys slide rule site take the instructions link.
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. You can enter and read a number typically to two or three decimal digits only. Api flange slide rules custom slide rule calculators. All about api flanges, hubs and clamps, slide rules, oilfield. Npr ed before the smartphone, the laptop and the pocket calculator, there was a.
On the reverse side of the slide, the s, l, and t scales appear, and the slide may be re. 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. Compared to a calculator, a slide rule is severely limited in its accuracy. Cleaning the slide rule major historical developments in the evolution of the slide rule preface 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. Vintage diwa 6inch slide rule, made in denmark, imprinted. A patent print poster of an engineers slide rule invented by leon walter rosenthal. An outstanding design feature of this range is the introduction of end caps for. The metal window is inserted over the slide rule to act as a place holder. Chapters 10 and 11 make slide decks with archival and legacy value and include more than one language urge readers to think beyond the immediate purpose and audience of a presentation and about a slide decks life after its initial use in a workplace meeting or professional conference. Virtual flange slide rule for android apk download. 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. 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. The slide rule the book, written by florian cajori, is the standard work on the early history of the slide rule. There is no way of indicating the position of the d.
Public domain documents that have limited availability. An outstanding design feature of this range is the introduction of end caps for holding the two stocks rigidly in. Multiplying with the slide rule iowa state university. Slide rule simple english wikipedia, the free encyclopedia. The link below will take you to dereks virtual slide rule site. All the relevant measurements and dimensional data for the api 6a flange. Since you used the 1 at the left hand side of the scale, the product is between 1 and 10. 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. Two large display spaces on each side of the chart for contact information, photos, illustrations and standard industry reference information. I particularly like the simulation of the pickett n 525es, a statistical slide rule and one that is uncommon. The slide rule, also known as a slipstick,is a mechanical analog computer. The cursor travels the full length of the body, and the hairline crosses these scales for direct comparison. The slide rule also does not tell you the sign of your result.
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. Here derek has put together a number of working slide rules that can be used for calculations and demonstrations on the computer. 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. The purpose of this website is to make available engineering. Sphere researchs slide rule universe, build your own. There is also a version as a word document which is smaller 2040 kb. 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. Im not an expert im also not old enough to have learned slide rule use in school.
In a separate calculation you find the order of magnitude by combining the powers of 10. Multiplying with the slide rule suppose you want to multiply 2x4. Download cameron flange slide rule free in pdf format. The sterling slide rule has standard a, b, c, c, d, and k scales. The a, d, and k scales are on the body, the b, and c scales on the slide. All of the authors were listed as associate or assistant professors of mathematics at the us naval academy. This rule also came with electro instructions, detailed here.
The scales ad are labeled on the lefthand side of the slide rule. The slide rule and other instruments which give the same facilities for rapid calculations, are covered by the term mechanical calculation. Another example of a simple slide rule would be the e6b flight computer. Npr ed before the smartphone, the laptop and the pocket calculator, there was a powerful mechanical computer. The slide rule was strong in conversions with a constant factor. The number of scales on a slide rule vary depending on the number of mathematical functions the slide rule can perform. Description download cameron flange slide rule free in pdf format. Thus, from this table, the actual history of the slide rule is not surprising. We have something for everybody, even a swap and sell area for visitors. 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.
Ci1st number to multiply, goes over top d2nd number to multiply. Rather than dealing with elaborate rules for positioning the decimal point, i was taught to first scale the factors and deal with the. A history of the logarithmic slide rule and allied instruments. Tape overlapping cursor ends on back simple paper slide rule by. 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, or slipstick, is a mechanical analog computer. They have a standardised set of markings called scales.