Graphoplex 650 Electro Koh-I-Noor pocket slide rule full set 1960 Italy

This pocket slide rule was made by Graphoplex from France for the Kohl-I-Nor Company from Austria/Czechoslovakia (still in existence today). The case, rule, box and manual are also Kohl-I-Nor branded and this one was sold in the Italian market. This model is the number 650 with an eleborate set of scales including 2 cos(φ) (Power Factor) scales on the front and 4 more on the back of the slider. It is a full set with two part box, control strip and the extra long manual in Italian. The rule itself is made of plastic, as well as the cursor. Curser and slide rule are complete and everything is in near mint condition. The leather pouch and manual are in good condition. The outer box has some scuffs from storage but is complete and measures 17,5 cm or 7 inches long. Do check the attached video on how to work your vintage man tool : slide rule operation instructions!