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A W Faber / Faber-Castell Slide Rules
I bought my first scientific calculator in a Decimo E, ‘Electronic Slide Rule’ and my ‘analogue calculator’ rapidly gathered dust. It was only about two years ago that I renewed a latent interest in them and started to explore the many superb resources available, which prompted me to purchase a selection. I wouldn’t describe myself as a collector, I bought one example each of styles and of makers that particularly interested me and my ‘collection’ has stopped at eleven.
This is a vintage slide rule by Faber Castell, dating from the s. The rule itself is in very good condition, nicely made and comes with original box. but.
One of the interesting questions with slide rules, is the date of manufacturing. With Faber-Castell slide rules this is generally not difficult, but there are exceptions. On this page I want to give some rules of thumb to determine the year of manufacturing of a Faber-Castell slide rule. Most Faber-Castell slide rules have on the back 2 embossed stamps that give the year and month of manufacturing. Mostly the left number gives the year, the right number the month. All slide rules with a 3-digit type number starting with a 3 like or were manufactured before All slide rules with a mixed type number like e.
Plastic slide rules which start with like e. Slide rules entrely made of plastic only appeared in
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A five-inch scale along the upper edge of the rule is divided to 32nds of an inch. Scales on the base and on the front of the slide are not lettered, but the scales on the top of the base correspond to K and A scales and the scales on the bottom of the base correspond to D and L scales. Scales on the slide correspond to B, CI, and C scales. This arrangement of scales is known as the “System Rietz,” developed by the German engineer Max Rietz in
Keywords: K&E Mannheim and Polyphase slide rules, Patent dates, Summary: Question about a Faber “Castell” slide rule marked Columbus and also Syst.
Linear slide rules are what you may think of as “normal” slide rules – straight scales with a sliding section and usually a cursor. But they still come in all sorts of weird and wonderful variations, from tiny to big, and single to multiple sliders. Scale lengths in my collection range from 36 to mm 1. Accuracy ranges from 2. Tie clip slide rule My smallest slide rule, actually a novelty slide rule but it works just fine and is more accurate than you might think.
Carpenter’s slide rule An early late ‘s hand stamped 24″ two fold carpenter’s rule incorporating a brass-inlaid slide rule. Classic Coggleshall log scales on top. The first widely used standard form for a logarithmic slide rule is the two-foot, two-fold design devised by Henry Coggeshall around This one by John Rabone and Sons of Birmingham would have been made in the late ‘s. Made in England. Everard type made of Boxwood. Manufactured in Bamboo with a celluloid coating.
McFarland entry. David passed on April 20, at the age of Even while in a wheel chair he attended all the Oughtred Society meetings. Collector and donor of slide rules to ISRM galleries. Watch my progress.
Today I’d like to present you a very special slide rule produced by Faber Castell, probably duration and therefore also the expected date of delivery. No other.
The first logarithmic calculating rules did not slide at all This ” Gunter’s Rule ” was the original device introduced by Edmund Gunter in , which remained in use for some two centuries. This idea remained for three centuries at the heart of every slide rule made. This instrument had a variety of useful scales and tables on one side and a standard 2-foot measuring rule on the other.
The logarithmic calculating function used the narrow slide in one of its legs For more, see this article. The variety of calculations required ran into a problem: to calculate multiply or divide or convert between different quantities one needs to move from a number on one scale to the number at the equivalent point on another scale.
This required the two scales to touch each other, so the equivalent points could be pinpointed accurately. The way to achieve this was to make a wide rule with as many pairs of scales as were required; in particular many sliding interfaces were needed, which was solved by having not one but two slides, with scales on both sides, for a total of eight interfaces compared to two on the Coggeshall.
An Ullage slide rule, ca. This rule had four scales, two on the body the fixed part and two on the central slide.
A W Faber Castell type 360 slide rule
Vintage Sun Hemmi No. Welcome to our store. Made in Germany – date code 11
VINTAGE A.W. FABER-CASTELL ENGINEERING C TRIANGLE RULER, MADE IN GERMANY. AU $ + AU $ shipping. RARE – THORNTON.
From Wikimedia Commons, the free media repository. File information. Structured data. Captions English Add a one-line explanation of what this file represents. Summary [ edit ] Description Faber Castell 6 inch slide rule. I, the copyright holder of this work, hereby publish it under the following licenses:. You may select the license of your choice. You cannot overwrite this file.
A. W. Faber Mannheim Simplex Slide Rule
The rule is clearly marked A. Faber – the name was changed to Faber-Castell in see P. I have a copy of C. Pickworth’s book ” Revised Instructions for the use of A. This gives other clues as to the age of the rule. From internal evidence and a date written on the front, the edition I have was published in or before
Rodger Shepherd (Mendham, N.J.: Astragal Press, ), 54, 90; Trevor Catlow, “Suggestions for Dating pre Faber Castell Slide Rules,” Journal of the.
Definition from Wiktionary, the free dictionary. This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. Description Faber-Castell N-front. This file is in the public domain , because the pictured product was manufactured and marketed prior to January 1, outside the United States. Non-compliant with US copyright formalities. Public domain, non-copyrighted in it’s home country Germany as of January 1,
File:Faber Castell 6 inch slide
Top Vol. Keywords: slide rule collecting, publishing, organizing, standards Jos-index-v0-nitem3-page5. Keywords: second meeting, reprints, Cajori, booklets, makers, membership Jos-index-v0-nitem4-page6.
Faber Castell Slide Rule 1/87 Rietz Date Code 52 In Wooden Storage Box. EUR From United Kingdom. EUR postage.
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Next Continue. Over the 19th and much of the 20th centuries the slide rule was the primary instrument for calculation used by many people engaged in the trades and in engineering. Although originally invented in the 17th century, and widely used for gauging or estimating the quantities of certain products such as alcoholic spirits it took until around for the slide rule to become generally popular with those for whom mathematics was a daily task. His scales were the “C” and “D” scales, ranging from 1 the index to 10 and used for multiplication and division, and the “A” and “B” scales, ranging from 1 the index to and used for squares and square roots.
New arrangements of scales appeared in the 20th century with the Rietz arrangement in and the Darmstadt arrangement in The Rietz scales added a log “L” scale, a “CI” or C inverted scale which was useful for calculations involving the reciprocal of a number, and the trigonometric scales: sine “S”, tangent “T” and “ST” for the small angles were the sine and tangent are the same, to the front face of the stock.
The Darmstadt arrangement added a series of Log-Log scales.
Dating faber-castell slide rules
British Broadcasting Corporation Home. At an introductory lecture from the Professor, we were told we would need a slide rule for the course. It was recommended that we buy the best one we could afford – “It will last you a lifetime”, he claimed. Following the advice, I went to the student stationery shop and bought the best I could afford, a Faber Castell.
“engineers in tights” made sure slide rule innovation persisted well specialist slide rules one made by German maker A.W. Faber-Castell (F-C) was particularly Schirdewan’s design dates from the late s it should come as no surprise.
Alro chemie showing atomic masses from j. Determining the first person in science slide rule requires consideration of several parameters. The interesting questions with case. Com: i mention it has a vintage slide rule? There are people. Com: i. This is difficult to date myself and dating and at work. To reduce the result is 0. My collection of manufacturing. Determining the chemical data reference wheels are used everyday in science slide rules were invented which calculated the other.
Faber-Castell 67/87 Rietz Simplex Slide Rule
As Dr. I was the first to open it. Also found on the front are the sine scales S and ST , double tan scales T1 and T2 , and a Pythagorean scale P, which gives the cosine of the angle on S.
Thanks to Mr Trevor Catlow for the artical “Suggestions for dating pre Faber-Castell slide rules” (search it on google) for enabling me to date it so.
Interested in finding out more out about such calculating wonders? Then try one of the slide rule related articles often light-hearted I have published. Go to the search papers page. Part of unusual limited series made from high pressure laminated HPL wood with metal inserts – patent no. Slide chart designed as planisphere by Dutchman R.
Harling – upside-down scales on the slide probably a design feature when inverting the slide – read more