![Graphoplex is a French manufacturer of slide rules that also supplied slide rules for Koh-I-Noor, a European company, still in business, with subsidiaries in the USA. Graphoplex is a French manufacturer of slide rules that also supplied slide rules for Koh-I-Noor, a European company, still in business, with subsidiaries in the USA.](https://www.sliderulemuseum.com/Graphoplex/Graphoplex_Koh-I-Noor_Koh-I-Log_10000_LogLog_box_GiftOfCindyTate.jpg)
Graphoplex is a French manufacturer of slide rules that also supplied slide rules for Koh-I-Noor, a European company, still in business, with subsidiaries in the USA.
![Slide Rule Raphoplex N 640 Electric Log-Log, Graphoplex. Engineering calculator. Vintage slide rule. Made in France. - Etsy Italia Slide Rule Raphoplex N 640 Electric Log-Log, Graphoplex. Engineering calculator. Vintage slide rule. Made in France. - Etsy Italia](https://i.etsystatic.com/35242770/r/il/e6cebc/4278829644/il_570xN.4278829644_h33y.jpg)
Slide Rule Raphoplex N 640 Electric Log-Log, Graphoplex. Engineering calculator. Vintage slide rule. Made in France. - Etsy Italia
![Graphoplex is a French manufacturer of slide rules that also supplied slide rules for Koh-I-Noor, a European company, still in business, with subsidiaries in the USA. Graphoplex is a French manufacturer of slide rules that also supplied slide rules for Koh-I-Noor, a European company, still in business, with subsidiaries in the USA.](https://www.sliderulemuseum.com/Graphoplex/P167_Graphoplex_612.jpg)
Graphoplex is a French manufacturer of slide rules that also supplied slide rules for Koh-I-Noor, a European company, still in business, with subsidiaries in the USA.
![regla de cálculo graphoplex 612 con funda piel - Acquista Regoli calcolatori antichi su todocoleccion regla de cálculo graphoplex 612 con funda piel - Acquista Regoli calcolatori antichi su todocoleccion](https://cloud10.todocoleccion.online/antiguedades-tecnicas/tc/2021/11/22/11/302067388.jpg)
regla de cálculo graphoplex 612 con funda piel - Acquista Regoli calcolatori antichi su todocoleccion
![Slide Rule Raphoplex N 640 Electric Log-Log, Graphoplex. Engineering calculator. Vintage slide rule. Made in France. - Etsy Italia Slide Rule Raphoplex N 640 Electric Log-Log, Graphoplex. Engineering calculator. Vintage slide rule. Made in France. - Etsy Italia](https://i.etsystatic.com/35242770/r/il/614016/4278840574/il_fullxfull.4278840574_8lv4.jpg)