Dating faber-castell slide rules

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.

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.

I’ve also managed to pick up a Hemmi slide rule magnifier for this dating of with it was developed by Faber in as an aid in keeping rules of decimal points.

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. They can be used to compute square roots, or for multiplication and division with the precision of a inch rule. Like on most Castell rules, the scales are self-documenting, meaning that the scale name appears at the left end of the scale, and its mathematical formula is at the right end.

The instruction manual, in English, was in excellent condition, with just some yellowing of the paper with age no musty smells. Even the box it came in was in pretty good condition, with just a few worn corners and two bent tabs. Not bad for a something year old product. Also included was a plastic reference card, about the same length and width as the slide rule. One side gives a detailed description of the SI system of measurements, and the other side describes the basics of set theory.

Fred Friedman February 04, You have a beautiful collection. Zoran Andjelinovic May 02, Posedujem ovaj siber treba mi upustvo, bio je najbolji na svetu koliko znam, platio sam ga jako mnog,ali sam i bio dobar na njemu.

Faber-Castell 2/83N Novo-Duplex

As a result of this over-all design style and part number format, there are often very similar Faber-Castell rules which differ only in the body design, and essentially identical rules which differ only in scale length. Some rules also featured ‘addiators’ on the reverse side, to allow addition and subtraction as well as conventional slide rule operations. These combination rules are quite unique, and provided exceptional computing power in an all mechanical design.

Rodger Shepherd (Mendham, N.J.: Astragal Press, ), 54, 90; Trevor Catlow, “Suggestions for Dating pre Faber Castell Slide Rules,” Journal of the.

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 The author says “The A. Faber Calculating Rule has usually been made of well-seasoned boxwood. Recently, however, an improved form has been introduced, in which the boxwood body is provided with celluloid facings upon which the several scales of the instrument are engraved.

In the same book Pickworth also says that in some rules the runner consists of “chisel-like projections” but the A. Faber rule has a preferred form of runner with glass in a metal frame. This rule has a cursor i. The rule described by Pickworth also has trigonometry scales on the back of the slide which this rule does not. The material of construction, the hybrid nature of the cursor and the lack of trig scales all seem to suggest that this rule is one of the earliest Faber models.

A. W. Faber Mannheim Simplex Slide Rule

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.

Click on a date/time to view the file as it appeared at that time. ( KB), Charlie42, {{Information |Description=Faber-Castell duplex slide rule, front side.

It has a green leather slip case. The Addiator can be seen on the Addiator page. Inch ruler on upper edge. There are tables on the reverse. It has a black card case. The metric ruler is continued in the well. Complete with green and clear plastic case. Made in More photos can be seen on the Addiator page. The Addiator shown on the Addiator page now has a negative window. It has a green, zip up case and a stylus.

It dates from System Dr Winkel. The scales are specialist ones for calculating machining times for drilling, milling, turning, grinding, etc.

A W Faber / Faber-Castell Slide Rules

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. Keywords: Saul Moskowitz, antique scientific instruments, catalogs Jos-index-v0-nitem5-page7. Keywords: Otis King, cylindrical slide rule, British patent, serial numbers, how to use. Keywords: Charpentier, metal circular slide rule, accuracy, British patent, French patent, models Jos-index-v0-nitem7-page

Faber Castell Slide Rule 1/87 Rietz Date Code 52 In Wooden Storage Box. EUR From United Kingdom. EUR postage.

Vintage Sun Hemmi No. Welcome to our store. Made in Germany – date code 11 Front Scale. Back Scale. In photos all aspects of the item were captured, including any damage or ware.

Chemical slide rules

Source: David Riches ‘s Collection. It is complete with mock snakeskin slip case not shown , stylus and instructions and probably dates from the s. The machine front has a rather faded finish. It is an Addimult Addmaster, serial no. It is a virtually exact copy of the pre-war Addiator.

While the trig scales on the reverse of the slide are labelled in the standard way (In Faber Castell started marking the date on their rules as the year after.

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. Made in Occupied Japan date this to –

Slide Rule

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From internal evidence and a date written on the front, the edition I have was published in or before The author says “The A. W. Faber Calculating Rule has.

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, In case this is not legally possible: The right to use this work is granted to anyone for any purpose , without any conditions, unless such conditions are required by law. Please verify that the reason given above complies with Commons’ licensing policy.

Product never copyrighted according to US law, manufactured and marketed in the late sixties prior.

Slide rule

Although the date codes were prominently engraved and paint-filled in the early years, from the late ‘s onward they can be hard to spot as they are only lightly engraved in small letters, often near an edge. According to Collection Spivey’s research project on Hughes Owens, the switch from dating old 17xx series rules to the new xxx series took place between June and August. Moreover, Hughes Owens also adopted dating brand name Geotec for its slide rule and drafting products somewhere between June newspaper May.

I rules working on an rules Slide Rules in Canada page that will feature more information about the Hughes Owens company and its collection, including the rules catalogs in my collection. Please stay tuned!

Get the best deal for Faber Castell Slide Rule from the largest Vtg Faber-​Castell 52/82 Schul D-Stab Slide Rule w/Plastic Case Date Code.

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. This instrument could multiply, divide, perform trigonometric calculations, raise numbers to any power and even calculate decimal roots.

But, by I was using desk top calculators and in about I bought my first pocket calculator, vastly outperforming the slide rule for multiplying and dividing although trigonometry, powers and roots came later. The slide rule died virtually overnight. In use by mathematicians, scientists and engineers for over years, it was so suddenly overtaken by the electronic calculator. But, prior to , most feats of engineering were accomplished using a slide rule.

I still keep a slide rule on my desk at work. Not only is it a conversation piece, new graduates find it a powerful challenge to discover how to use it and, particularly, why it works. Comments are closed for this object.

IM2012 Evolution of Faber Castell Slide Rule Duplex Cursors

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