Gregs slide rules concise circular slide rules no 28n. Faber rule build a slide rule build both a linear and circular rule circular slide rules circular slide rule archives circular slide rule pictures cleaning and caring. Slide rule a quality instrument for sterling student or professional operating instructions a complete course in use and operation of slide rule the sterling student slide rule is. This is a circular slide rule first created in the. A practiced user with a good quality slide rule can multiply, divide, exponentiate, take logarithms and perform trigonometric operations to three significant figures more quickly than with an electronic calculator. 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 pdf file for this slide rule has some problems that make it unfit for anything but practice by a beginner. Slide rules usually look like a narrow ruler, but for todays demonstration we will be building a circular slide rule. There are also a couple of slider calculaters from brian and myself. Customers tell us that they know circular slide rule style. If you omit blank cover pages 2, 67, and 68, the whole thing fits neatly on 11 sheets of paper. Fivescale circular with slide out panel containing a wealth of useful conversion tables and. You can use these to create any length of slide rule mike. Pdf file to generate the scales on a sheet of paper.
Circular slide rule king pocket calculator 66 sclales thacher calculator 30 ft. Unlike earlier versions of my circular slide rule, i put it far enough towards the outside that i could graduate it for a 20 inch rule instead of as for a 10 inch rule. This is the second of three possible backgrounds for the circular slide rule. Folks, submarine attack course finder mark i model 3 manual, o. As many of you know, watches with slide rule functions have 2 logarithmic scales the outer of which turns. Most students learned slide rule use on the linear slide rules, and did not find reason to switch. You can see the gilson cursor mechanism and the two cursors arranged in the 4 oclock pos. Faber rule build a slide rule build both a linear and circular. Scientific american may 2006 university of vermont. These were used by pilots to do simple arithmetic, conversions and other calculations in an era before gps and. Old pilots watches feature these slide rules, and any newer pilotstyle watches also have this. This one is for a generalpurpose rule, except that hyperbolic functions are present, and loglog scales omitted.
Youll find more information about their current circular slide rule offerings at their website. Erics where to buy slide rules page erics slide rule site. If you are learning to use the slide rule for the first time you may find. Many pilots watches made make use of a circular slide rule on the bezel of the watch. Dozens of scales are included and numerous features that could never exist on a physical slide rule are also included, such as color options, numeric displays of the values under the hairlines, and so on. Teach yourself the slide rule by burns snodgrass teach yourself the slide rule by burns snodgrass a pdf file a pickworth book for the a. Pickett n904t trig and decimal keeper speed rule pickett n525es statrule pickett n4es vectortype log log dual base speed rule pickett 160es microline pickett n600es log log speed.
Oughtred society slide rule reference manual the oughtred. You can also check out my circular and combination slide rules page for some examples. Slide rule scales build your own sr international slide rule. Faber castel 283n this rule was one of the most comprehensive produced. The smell of molten projects in the morning ed nisleys. A practiced user with a good quality slide rule can multiply, divide, exponentiate, take logarithms and perform trigonometric operations to three.
Another example of a simple slide rule would be the e6b flight computer. Slide rule was invented by english minister william oughtred in 1622. Using a slide rule is a bit of a lost art but with a bit of practice, it can be a useful everyday tool. Circular slide rule calculators wheel chart calculators. If you are learning to use the slide rule for the first time you may find the coverage of the manual rather brief.
For the past 400 years, the calculations performed on slide rules. As graphical analog calculators, slide rules are closely related to nomograms, but the. Make offer danish jorgensen patent circular slide rule ibm pen holder1960 very rare unique. These were used by pilots to do simple arithmetic, conversions and other calculations in an era before gps and calculators.
This program replicates the most common types of slide rules. Dietzgen manuals for dietzgen slide rules catalogs retail catalogs, brochures and advertisements of slide rules calculators manuals for electronic slide rule calculators. Spheres slide rule universe is a repository for information, pictures, history and links to sellers. The appeal of slide rules for use and as collectables. The slide rule, also known colloquially in the united states as a slipstick, is a mechanical analog computer. The slide rule and other instruments which give the same facilities for rapid calculations, are covered by the term mechanical calculation. 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.
This site hosts a portable package of derek ross, stefan vorkoetters, and brian bartholomews virtual slide rules browserhosted slide rule simulators. Sphere researchs slide rule universe, build your own slide rules. One slide rule remaining in daily use around the world is the e6b. If you click on the image a scan of the article is available in pdf format, reproduced here with the permission of the uksrc. Again, id recommend printing them on the front and back of the same piece of paper, just like they would come with a sterling slide rule.
Customers tell us that they know circular slide rule style calculators as. A slide rule is a mechanical device that uses the alignment of numeric values marked on sliding scales to perform mathematical calculations. Theres a good selection at the international slide rule museum website, including an ingenious circular rule using a cd case by ying hum, see below. I did a lot of research on them, and when i did, i discovered that there are circular variations. The slide rule is a simple but elegant mechanical calculator. Henry suttons slide rule top was an early circular rule circa 1663. A large number of templates for circular slide rules are given, along with many. The first circular slide rule on this link uses a cd case as the basis for the slide rule. Concise circular slide rules concise typee weights and measures, conversion tables and circular slide rule. This company was one of britains major slide rule manufacturers.
Teach yourself the slide rule by burns snodgrass a pdf file a pickworth. One relativator is now in the hands of brookhaven physicist and quantum diarist peter steinberg, whose mother found it among his late fathers belongings. One of the nice things about circular slide rules is that youll. The first of three templates to build a circular slide rule background. If both the outside and inside circular rules have identical scales with a full range from 10 to 90, then you have what are known as c and d log scales. Slide rules home page instructions manuals instruction for use new circular slide rule multiplication of two given numbers rule. Bissaker slide rule 1654 circular slide rule king pocket calculator 66 sclales thacher calculator 30 ft. It is a very good example on how the divisions of the slide rule scales are calculated. Claimed in a 1630 pamphlet to have come up with the circular slide rule. Scroll down about 23 of the page to see a nice wooden slide rule built by a. I f youve ever seen a watch with a slide rule bezel and havent known how to use it, we have a little guide for you. This one features a logarithmic scale for multiplication that makes five turns around the rule. Concise 28 a fairly basic but well known circular rule.
Later i thought a circular slide rule would be easier to make out of paper. The only maker that still produces classic slide rules is the japanese maker concise. Slide rule a quality instrument for sterling student or professional operating instructions a complete course in use and operation of slide rule the sterling student slide rule is an accurate instrument for use in multiplication, division, proportion, square and cube root problems, as well as sine, tangent and logar ithm solutions. After a buying or making a slide rule, if the original manual isnt available online many are, theres a superb illustrated tutorial on slide rule use pdf download offered on the oughtred. There are at least three different scales, and on most of them the numbers arent even spaced evenly apart. World record slide rule, the eximius diu 6 encore consulting. One relativator is now in the hands of brookhaven physicist and quantum diarist peter steinberg, whose. Note that when you look at the files, the lines are very very thin.
It is unfortunate that, for some reasons not easy to see, the slide. If you use a different pdf reader, your procedures should be quite similar. 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. Here is the first of three templates for circular slide rule backgrounds. For ad ditional explanations and practice problems, a slide rule be. As well as describing the wide range of scales found on their rules it also describes how to use their patented differential trigonometrical. Against the multiplier on scale c read the product on scale d example 1.
The following was written in 1999 by jason waskiewicz. There are at least three different scales, and on most of them the. It describes the circular slide rule commonly know as an iswas used to calculate an approach and attack by an submarine. Sphere researchs slide rule universe, build your own slide. Issue 12 contains my first published gazette article entitled thacher accuracy with unique expenditure. Fivescale circular with slide out panel containing a wealth of useful conversion tables and data. Dozens of scales are included and numerous features that could never exist on a physical slide rule. While this coverage is complete and thorough, it is necessarily terse. Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the. Slide rule gazette issues 11 and 12 published by the united kingdom slide rule circle uksrc. Our next project will include a circular slide rule in the design of the watch.
This is peculiar, but it is intended that this rule will be used in conjunction with the one with two fourdecade loglog scales, normal and reciprocal, as part of a set. As graphical analog calculators, slide rules are closely related to nomograms, but the former are used for general calculations, whereas the latter are used for applicationspecific computations. My slide rules this gallery is in the process of some updating, as many of the scans are from the 1990s. Mannheim slide rule 1850 faber castell 283n nestler 23r mannheim issac. After a buying or making a slide rule, if the original. There are even some circular slide rules you can build. Submarine attack course finder mark i model 3 manual. The spiral is 750mm diameter about 30, printed on paper, laminated, and stuck onto a circular piece of acrylic perspex.