Cooke, 1942 this instruction manual is a supplement to the 407 manual describing the use of the special scales on the 49 cooke radio slide rule. This image shows a rule which follows the standard naming convention. Slide rules were used to go to the moon and to build bridges, skyscrapers, tunnels, aqueducts and. Move the c rule so that the leftmost 1 is aligned with 2 on the d rule. You can enter and read a number typically to two or three decimal digits only. Used to determine the natural log values ln, or log to base e of numbers from other scales. The ones, which still exist, will eventually deteriorate with time. Slide rule simple english wikipedia, the free encyclopedia. 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.
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. This aluminum slide rule does not contain electronics, its for use in electronics, so it has special scales for finding frequencies and so forth. The sre will search only for expressions that can be computed with those scales by the above procedures. Overview of fancier slide rules folded scales, extended. In 1950, post brought out an american version of the bamboo slide rule manufactured by hemmi of japan, the versalog. The great multiplicity of scales on slide rules from that period also provided access to trig values, natural logs, hyperbolics, square roots same log scales but scaled by half, etc. Sphere researchs slide rule universe, build your own slide. All the scales of your circular slide rule are graduated into decimal parts.
Jul 17, 2017 the great multiplicity of scales on slide rules from that period also provided access to trig values, natural logs, hyperbolics, square roots same log scales but scaled by half, etc. 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. 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 the slide rule is used primarily for multiplication and division, and also for functions. The single slide rule is designed for beginner, consisting of k, a, b, ci, c and d scales only. The center slide could be used to extend the slide ruler thanks to an extension of the centimeter scale under the slide. You can use these to create any length of slide rule mike. The slide rule a practical manual download ebook pdf, epub. 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 slide rule does not play music, it is an educational tool not an entertainment tool. The dual slide rule has scales as shown in the image.
A seiko flightmaster sna411 with rotary slide rule on it. Bissaker slide rule 1654 circular slide rule king pocket calculator 66 sclales thacher calculator 30 ft. The metal window is inserted over the slide rule to act as a place holder. A few weeks ago i showed my new old dietzgen rule to the preschool teachers at our church. Cdf, pix, the folded scales, cf on the slide, df on the body. It has a, b, c, ci, d, l, ln, s and t scales, plus two more scales for dealing with electrical formulae 2. It might be good to try a slide rule with a different download for the scales in order to see if it would be more accurate. Slide rule vintage international kindle edition by. Cd, x, the c and d scales, c on the slide, d on the body. The loglog scales on a slide rule, which are used to raise numbers to powers, span a considerable distance.
Let us imagine we are using c and di scales on a slide rule to multiply instead of ci and d scales. This site is like a library, use search box in the widget to get ebook that you want. Compared to a calculator, a slide rule is severely limited in its accuracy. Download it once and read it on your kindle device, pc, phones or tablets. Slide rule on watch bezel automatic watches for men. This is a powerful lightweight pocket rule, with performance equal to a much larger straight rule. On one side, the base has ll0, l, k, a, d, di, p, and ll0 scales, with b, s, st, t, and c scales on the.
For many problems, one could approach three significant digits of accuracy with a slide rule. The c and d scales each look like a single stretched out ruler, reading from left to right. More complex slide rules allow other calculations, such as square roots, exponentials, logarithms, and trigonometric functions. It is a free, javabased, incredibly precise and configurable scientific slide rule that you can run on your desktop. Picketts most popular aluminum circular slide rule, with decimal to fraction conversions and additional scales on rear face. Relayricoh duplex slide rule for lutz 151p description this teninch, twosided bamboo rule is coated on all sides with white plastic and has a plastic indicator with white plastic edges.
Each scale on the slide rule should have a letter or symbol identifying it, printed to the left or right. Angle divisions were originally in minutes, but decimal divisions gradually became predominant, in decitrig slide rules. Very nice rule, shown with the gold embossed black belting leather case. A slide rule is a mechanical device that uses the alignment of numeric values marked on sliding scales to perform mathematical calculations. Constructing and understanding new and old scales on slide. The simplest slide rule would have two log scales that you could use to do multiplication and division see my slide rule introduction page for more info. 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.
Thanks to the awesome power of logarithmic scales a slide rule gives you several computational features using your very own virtual, mechanical computer. Fairly uncommon, as most slide rule scales use base 10 logs except for the loglog scales. This is a fun quickreference, but you really should know your circle of fifths. To multiply 3 by 2, bring the 3 on the c scale over the 2 on the di scale, and then the index of the c scale points to the product on the di scale.
The next image shows a rule on which the scales are not named but, for example, the upper scale of the stock can be identified as a cube k scale as it has 1 to 1 repeated 3 times. Due to popular request, the following 75 reference scale images are combined into one file that you can download. Since the c and d scales are the most used scales of the slide rule, well use them to demonstrate the. Apr 05, 2017 a seiko flightmaster sna411 with rotary slide rule on it. The following was written in 1999 by jason waskiewicz. Since this kind of scale can be intimidating, the model a rule includes the ll scale, which works in conjunction with the. Spheres pickett slide rule company archive slide rules. Reversible slide with cos, sintg and ctg scales on other side. This guide will assume your slide rule uses the most common notation. The slide rule, also known colloquially in the united states as a slipstick, is a mechanical analog computer. Additionally, the slide rule does not tell you where the decimal point is located in the answer. All slide rules consist of logarithmic scales that can be moved in relation to each other in order to do basic mathematical calculations. This means that all divisions are divided into equal parts of ten so that each mark stands for one tenth. Finally, for a more general introduction to slide rules, please check.
Sphere researchs slide rule universe, build your own. Finally, for a more general introduction to slide rules, please check out my introduction page pickett 140160 instruction sheet. The slide rule has special scales for the radio engineer. The scale on figure 1 is called r scale on hoffmans digital slide rule 1. But wait, if you order now youll get the slide rule for cello scales at the same lowcost. Scales for building your own slide rule 1999 hacker news. A duplex slide rule had scales on both sides, the usual case for engineering slide rules. Basic slide rule is a little advanced for 4 year olds, but the kids like anything that has moving parts. The number of scales on a slide rule vary depending on the number of mathematical functions the slide rule can perform.
Collection of slide rule replicas slide rules are not manufactured any more. The radio buttons in the last 2 rows of the control panel let you select the scales that are present on the body and the slide of a hypothetical slide rule. Collecting slide rules oughtred society slide rule home. They have a standardised set of markings called scales. The slide rule also does not tell you the sign of your result. The slide rule, or slipstick, is a mechanical analog computer. Notice the two small scales on the bezel a bidirectional rotating bezel and on the edge of the black dial. The inscribed line for the 1 on the a scale should be directly above the matching line on the b scale while the 1 on the c scale is directly above the line for the d scale. Use features like bookmarks, note taking and highlighting while reading slide rule vintage international.
Scales may be split into two or more subscales and it is up to you to figure out which is. Located on the slide, most calculations are done in conjunction with the fundamental cd scales. They are briefly described here, for more information see table 1 on the slide rule page. Before using a slide rule new to you there is a preliminary check for accuracy that should be made. Collecting slide rules oughtred society slide rule home page. Cdi, 1x, inverted scales, the ci scale on the slide, di on the body. These common operations can be timeconsuming and errorprone when done on paper. A description of slide rule types and common scale labels is given on my slide rule scales page. Here you will find a collection of some of the most prominent models carefully handcrafted and simulated or emulated in javascript. This video could be watched after my basic slide rule. Logarithms base 10 two ranges are only for use with w scales. Mar 29, 2019 each scale on the slide rule should have a letter or symbol identifying it, printed to the left or right. For the past 400 years, the calculations performed on slide rules have made possible such feats as designing the first skyscraper and putting a man on the moon. Slide rule vintage international kindle edition by shute, nevil.
Existence of multidimensional travelling fronts with a multistable nonlinearity hamel, f. A cursor is fixed in the center of the window to allow for accurate readings. In its most basic form, the slide rule uses two logarithmic scales to allow rapid multiplication and division of numbers. A sliderule composed of a body and a slide, each having scales, the numerals of the scale a on the body having exponents affixed to them, substantially as described, and for the purpose set forth. Slide rule universe take the learn to use and clean them link. The scales didnt have to be straight they could be circular. All other scales on a slide rule are referenced to the c and d scales. The slide rule a practical manual download ebook pdf. The scales ad are labeled on the lefthand side of the slide rule. Ron manleys slide rule site take the instructions link. An abelian rule for bciand variations kowalski, tomasz and humberstone, lloyd, notre dame journal of formal logic, 2016.
Resources relayricoh duplex slide rule for lutz 151p. Slide rules were used to go to the moon and to build bridges, skyscrapers, tunnels, aqueducts and nearly everything else. Mannheim slide rule 1850 faber castell 283n nestler 23r mannheim issac newton put 3 scales in parallel in 1675 to compute cubes. The graphics can be used to construct a custom slide rule scale set by copying and pasting into a picture editor and printing out onto paper or transparancies. Click download or read online button to get the slide rule a practical manual book now. Well guys, those are the slide rule or rotary slide rule since its a circular rule now.
It is a very good example on how the divisions of the slide rule scales are calculated. Slide rule vintage international kindle edition by shute. In a separate calculation you find the order of magnitude by combining the powers of 10. 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. Exponential power scale used for raising to a power that is greater than one, with a range of 1. Today, slide rules can be found on ebay, antique stores and estate auctions. Its usage is identical to that of a real slide rule, but tim has introduced two major enhancements. Show off your geek cred with your very own virtual slide rule. List of 24 common slide rule scales and their functions slide rules for special applications major slide rule makers and some of their common models books, manuals, and articles more than 100 references cleaning and care for your slide rule slide rules on the internet the oughtred society website includes. Start with these examples, then try some more of your own.
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