The pdf files are to scale so just be careful in cutting the center hole. In a separate calculation you find the order of magnitude by combining the powers of 10. This file is the one that needs to be printed on clear plastic as the overlay for the family of three circular slide rules. Instructions for using a slide rule project gutenberg.
Faber castel 283n this rule was one of the most comprehensive produced. I recently started getting interested in slide rule calculators and i was considering buying one. The author was managing director of the company that made unique slide rules but as this was a comprehensive range it will be useful for other rules as well. The loglog scales, but not the inverse loglog scales, are graduated for a 20 rule, except the last little bit. Cliff stoll shows off an electricpowered slide rule. The most convenient way to locate the decimal point is to make a mental multiplication. Download this pdf file and print it on a a4 paper with 100% scaling.
Get started with any of our readytouse laser cutting design templates and customize it to fit your needs, whether its electronics enclosures, faceplates, or anything in between. The first of a series of videos explaining the basic slide rule. Scientific american may 2006 university of vermont. Sphere researchs slide rule universe, build your own slide rules. But, when you look at the 5 on the b scale, it is at least the width of a line off of the 1 or 10 on the a scale. And the slide rule has become an electronic calculator. The pdf file for this slide rule has some problems that make it unfit for anything but practice by a beginner.
The shirt and tie evolved into a tshirt sporting some software advertisement. A cylindrical slide rule is very good for hand making and using because it does. Meanwhile, using online virtual slide rules to practice, i noticed that i wasnt able to identify the exact model was best suited for my needs. Additionally, the slide rule does not tell you where the decimal point is located in the answer. You need to download the pdf image of the slide rule from. O logarithms to the base 10 make the tables smaller and easier because the. Download premium images you cant get anywhere else. The fist section shows how to make a simple rule, and suggestions for all the mechanical steps.
Make sure the origins marked 1 of two c scales are on a line, and the. 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. I decided i wanted to make one of these just for fun, but mount it on wood and plexiglass. Find highquality slide rule stock photos and editorial news pictures from getty images.
Later i thought a circular slide rule would be easier to make out of paper. Scales to make a circular slide rule using a cd case by ying hum. By the time i finished engineering school in 1963, the slide rule was a well worn. Spheres slide rule universe is a repository for information, pictures. Im not an expert im also not old enough to have learned slide rule use in school. The slide rule is a simple but elegant mechanical calculator. Also, the creator of the universal slide rule league a lunchtime 5minute competition of 10 problems. The slide rule and other instruments which give the same facilities for rapid calculations, are covered by the term mechanical calculation. The pocket protector has been replaced by a cell phone holster.