Generally, they are either have a linear form or that of a circle. Mannheim slide rule 1850 faber castell 283n nestler 23r mannheim issac newton put 3 scales in parallel in 1675 to compute cubes. Slide rule concentrates on nevil shutes work in aviation, ending in 1938 when he left the industry the book begins with details of shutes childhood and upbringing, his school years, events in the easter 1916 dublin rising, where his father was secretary. Reading the slide rule scales ia the decimal point d. An easy introduction to the slide rule by isaac asimov.
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 following books are written specifically for slide rule collectors, and are all currently in press. To someone who doesnt know how to use it, a slide rule looks like a ruler designed by picasso. All other scales on a slide rule are referenced to the c and d scales. 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 appeal of slide rules for use and as collectables. The first circular slide rule on this link uses a cd case as the basis for the slide rule. Formakeuptorqueforfluoropolymer coatedb7l7boltsand2hnuts, seepage10ofthisdocument. Pasquale points out, one of the advantages of using a slide rule is that it is an extension of the mind. No matter what youre looking for or where you are in the world, our global marketplace of sellers can help you find unique and affordable options. The slide rule the book, written by florian cajori, is the standard work on the early history of the slide rule. Also because of all the detail, the 30loop spiral slide rule converts to a lowrez bitmap data image while you move it, then back to a vector based image as soon as you release. Autobiography of an engineer is the partial autobiography of the british novelist nevil shute.
It seems to me that no slide rule site would be complete without a section discussing some of the available books on the subject. Slide rule, a device consisting of graduated scales capable of relative movement, by means of which simple calculations may be carried out mechanically. It was great to read about walter shawlees slide rule collection. A slide rule is only as accurate as its manufacture and calibration and your ability to set it and read values. 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. Dividing with the slide rule iowa state university. Ive been lurking in here for quite a while now and wanted to get myself a first real watch. Anyway you do it, the printouts could then be cut up and reassembled into a slide rulelike device. A slide rule is a mechanical device that uses the alignment of numeric values marked on sliding scales to perform mathematical calculations. A duplex slide rule had scales on both sides, the usual case for engineering slide rules. Slide rule, ham radio, data science, maths, professor, infographics. 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. There are at least three different scales, and on most of them the numbers arent even spaced evenly apart.
This page gives my own templates see below for constructing a circular slide rule, with scales c, ci, d, a, and k. Description download cameron flange slide rule free in pdf format. Npr ed before the smartphone, the laptop and the pocket calculator, there was a powerful mechanical computer. The slide rule and other instruments which give the same facilities for rapid calculations, are covered by the term mechanical calculation. Slide rule ruler good to know engineering science technology pocket vintage typewriter. However, given their somewhat esoteric nature they can be hard to find, so you might want to order them directly from the publisher. Dividing with the slide rule to divide with a slide rule, you reverse the process you used for multiplication. In practice, you get between two and three significant figures from slide rule calculations, and these errors compound as you use intermediate values in subsequent calculations. To make your life easier, there are a number of downloadable slide rule files available online at many of the larger slide rule sites check out my online links page for some leads. This is why the slide rule is able to do multiplication and division rather than addition and subtraction. Use features like bookmarks, note taking and highlighting while reading slide rule vintage international. This site hosts a portable package of derek ross, stefan vorkoetters, and brian bartholomews virtual slide rules browserhosted slide rule simulators.
Read the number on the d scale which is just below the 1 on the c scale. Now, an exhibit celebrates the lengthy history of the device, featuring the slide rules of. Line up the 4 on the c sliding scale with the 8 on the d frame scale. The description of virtual flange slide rule valveworks usa presents the virtual flange slide rule.
Change presentation practices using grounded research 17. Slide rule was invented by english minister william oughtred in 1622. The slide rule also does not tell you the sign of your result. The link below will take you to dereks virtual slide rule site. Connect it on the back of the slide rule with a piece of sticky tape. Etsy is the home to thousands of handmade, vintage, and oneofakind products and gifts related to your search. The slide rule, also known as a slipstick, is a mechanical analog computer.
See the page devoted to the watch style of slide rule at the international slide rule museum. The information in these pages was compiled from industry sources which texas flange and fitting supply believe to be reliable. 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. Refer to 17d torque chart on page 11 when using 6bx flanges for subsea applications see page 12 of this document for important notes. Question looking for sliderule watches any recommendations.
In 1950, post brought out an american version of the bamboo slide rule manufactured by hemmi of japan, the versalog. Scientific american may 2006 university of vermont. An easy introduction to the slide rule internet archive. Now glue the upper layer of the slide on top of its back and check that the slide moves smoothly. Decades have passed since the pocket calculator relegated the trusty slide rule to near obscurity. Download product flyer is to download pdf in new tab. Museum of hp calculators slide rule page a very cool page with all sorts of explanations of how sliderules work and pictures of various types, including circular and cylindrical. Here derek has put together a number of working slide rules that can be used for calculations and demonstrations on the computer. Simple paper slide rule michael gasperi 2012 fold fold cut cut cut 1. The slide rule, also known colloquially in the united states as a slipstick, is a mechanical analog computer.
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 application gives you access to all the relevant measurements and dimensional data for the api 6a integral flange. Additionally, the slide rule does not tell you where the decimal point is located in the answer. It is unfortunate that, for some reasons not easy to see, the slide rule is sometimes regarded as a difficult instrument with which to. Vintage diwa 6inch slide rule, made in denmark, imprinted. Tape overlapping cursor ends on back simple paper slide rule by. On this page, i have decided to list all the books currently in my collection, along with some editorial comments to hopefully help you separate the wheat from the chaff. Slide rule vintage international kindle edition by shute. Torque values shown on this page apply only to api spec 6a and 16a designated flanges, for surface applications.
Ron manleys slide rule site take the instructions link. Slide rule vintage international kindle edition by shute, nevil. What is the significance of the breitling circular slide rule. Hes uploaded pdf files that let you print out the mask for the top layer and bar chart and directions for the bottom layer. Erics where to buy slide rules page erics slide rule site. Since i found this subreddit ive been on the lookout for watches everywhere and found an old navitimer in the basement, which ive been wearing virtually nonstop. Download it once and read it on your kindle device, pc, phones or tablets. I particularly like the simulation of the pickett n 525es, a statistical slide rule and one that is uncommon. Breitling, a swiss watch company, released their pilots slide rule and their pilots wristwatch in 1952. You can enter and read a number typically to two or three decimal digits only. Compared to a calculator, a slide rule is severely limited in its accuracy. There are also a couple of slider calculaters from brian and myself. The scales on a slide rule are logarithmic, in that the spacing between divisions the lines on the scale become closer together as the value increases. 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 rule if youre not sure about how to use a slide rule, take a look at slide rule calculations by example opens in new window.
Npr ed before the smartphone, the laptop and the pocket calculator, there was a. I typed and scanned this in from one of the manuals that came with my n4es slide rule. Theres no need to buy one for a user of any age to get started. Bissaker slide rule 1654 circular slide rule king pocket calculator 66 sclales thacher calculator 30 ft. A slide rule user may attract a bit of attention, perhaps even start a conversation or two if used in public. Meeting service and quality demands since 1986 texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges we provide. In a separate calculation you find the order of magnitude by combining the powers of 10. Specifically adapted for flight calculations, the breitling navitimer model calculated airspeed, rate of. Vintage diwa 6inch slide rule, made in denmark, imprinted hoffman electronics corporation explore france1978s photos on flickr. Wrap the foil of the sliding cursor around the slide rule, so that the ends of the black line lie exactly on top of each other. I dont have any specific links at the moment, but it shouldn.
Publication date 1965 collection thecomputermuseumarchive. The slide rule is used primarily for multiplication and division, and also for scientific functions such as roots, logarithms and trigonometry, but does not generally perform addition or subtraction there are many different styles of slide rules. The slide rule explorer users guide by peter alfeld, department of mathematics, university of utah. The slide rule is used primarily for multiplication and division, and also for scientific functions such as roots, logarithms and trigonometry, but does not generally perform addition or subtraction.
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. Henry suttons slide rule top was an early circular rule circa 1663. Jul 22, 2011 no shoes allowed on the helter skelter. Includes a brief side show slide show of famous and interesting slide.