Graphoplex Koh-I-Noor Rapido-Math 10021 pocket slide rule 1960 Italy

This pocket slide rule was made by Graphoplex from France fro 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 10021 Rapido-Math with an interesting set of scales on the front only. The manual covers most  of the Kohl-I-Nor sold models and scale (Rietz, Electric Log-Log and Electro) but not specifically the 10021 model. The rule itself is made of plastic, as well as the cursor. Curser and slide rule are complete and everything is in good condition but a little of the ink has run out (the price is adjusted for this). The leather pouch and manual are in good condition. The outer box suffered from storage and is missing the small sides. It measures 15,5 cm or 6 1/4 inches long. Do check the attached video on how to work your vintage man tool : slide rule operation instructions!