CLASSIQUE. 29,4 cm. GRAPHOPLEX. ELECTRIC LOG-LOG British ( anglaise). CLASSIQUE. 29 cm. GRAPHOPLEX. ELECTRIC LOG-LOG ( variante). Graphoplex Slide rules. Welcome · Calculators · Slide Rules · Aristo · Arithma · Concise · Dietzgen · Faber-Castell · Gilson · Graphoplex · Hope · Keuffel & Esser . Use the various search options to discover and browse the details of the slide rules (many with images and copies of the instructions) I have collected since.

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Graphoplex Slide rules – Graphoplex Electric Log-Log

So far, we have located a wide variety of simplex pocket and full sized rules, and several full sized duplex rules, all in plastic construction. Specialty electronics engineering rule for direct calculation of frequency, capacitive reactance, inductive reactance, etc. Both cursor and rule are celluloid. Go to the Exotic Slide Rules.

Go to the Grzphoplex Rule Parts. Camera Voigtlander Vitoret R case and accessories Germany Toys Schuco microracer red Germany Rotating the winder with the button depressed rotates the two hands cursors together. Camera Prazisa boxed camera flash light Germany. Leather slip case b Pocket Tecnilog Go to the Auction Page.

Here are the original French instructions included with typical Graphoplex rules: It appears to be made of celluloid, with a celluloid and very thin nickel plated, brass cursor. Pocket grzphoplex rules were quite uncommon, with only a single example found so far, the b.


Rotating the winder alone rotates the back scales.

Go to the Slide Rule Books. Unusual black, red and blue scale markings, fine secondary numbers in blue. The number grapyoplex on the rule itself and on the manual.

This model is the student slide rule It has scales on both sides of the inner slider. General purpose simplex trig rule.

DeskMan tools. The has crisp black scales, with inverse and extension areas in red, and many extra secondary numbers in pale blue, an exceptionally clean and clear rule layout, worth tracking down.

Graphoplex 640 slide rule box papers 1960 France

Note the unusual scale markings B’s on the lower early graphpplex. Scales are the usual Rietz ones: F graphoples A sked Q uestions. Other calculations can also be made relating to the pipework used. I was able to find two Koh-I-Noor sets here, but only one other original Graphoplex rule. The large stylized G with ‘ raphoplex ‘ inside is their logo, and often confuses people into thinking the rules are called ‘Raphoplex’ rules.

Camera Ilford exposure meter England Curser and slide rule are complete and everything is in good condition, some light yellowing to the front. Only short form catalog additions to instructions sheets have been found so far, so the complete model range and dates of manufacture are not known at this time.


Desk Graphoplex a Neperlog The higher end gray end brace duplex rules from Graphoplex were also sold in the USA by the large drafting supply distributor, Koh-I-Noorbased in New Grphoplex, and still have the Graphoplex logo.

I have been unable to locate a current company called Graphop,ex in France gtaphoplex, but they supposedly were involved in other plastics molding and manufacturing, so may now exist as a different company, or as part of a larger conglomerate.

Graphoplex Slide rules

It has the following scales: Leather flap case Pocket Electric Log Log Time Certina hanwind steel Switzerland. Man toolsTime. Tavernier Gravet ten inch, closed frame, plastic slide rule. Ther is also a formula chart strip form included with some rules. Graphoplex slide rule box papers France. This complete set of slide rule,cardboard box, manual and card are made by Graphoplex from France.

Common color schemes were maroon, violet and gray, and cases were typically a two part plastic case maroon or later, grayor a thin brown flap-style leather case. It has a burgundy plastic case, card of tables, etc, and an instruction leaflet. Coffee Neapolitan flip coffee pot Italy Extended capacity hyperbolic log log rule, has P Pythagorean scale. Sphere Research Corporation Sunnyside Rd.