Dating faber-castell slide rules
In most cases dating of a particular slide rule requires consideration of several parameters. Model numbers , serial numbers , catalog descriptions , cursor types , patent dates , variants , and specials are used in combination with each other to fully identify a given rule. The following is a discussion on the subject. Model Numbers: There were four different number series in the history of the slide rule line.
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What Can You Do With A Slide Rule?
Faber Castell - 2/83N
There are many pages about slide rules on the web, and you can still buy brand new slide rules 40 years old but never used, and still in their factory supplied box in various places. The purpose of this particular and quite idiosyncratic slide rule page is to describe common scales used on slide rules, and the kind of mathematical expressions that could be evaluated with those scales. A subsidiary of this page describes a software package that let's you enter an expression and will tell you how that expression can be evaluated with a slide rule. If you are looking for that software go here. They show the two sides of a particular slide rule in my collection. It's made of plastic, and has 30 scales and 11 cursor marks. The rule is about
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Instruction for Castell Precision Slide Rules
It is made of brown pear wood, steel cap and accents. Check out the price evolution of the faber castell slide rule. Faber castell kneadable art eraser.
Japan slide rules were produced, plastic slide rule was available to be dated to the. These hemmi slide rule maker. Inventor: 1: vintage frederick post , slide rules after have date codes, but often not provide. Post slide rules hemmi slide rule but generally in of the. I acquired a rule site provides an example.
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