IWA 0272 Muiderkring slide rule full set 1963 Germany Holland

This interesting slide rule was developed by De Muiderkring from Holland and produced by IWA with number 0272 and also marked 1963. The Muiderkring was a group of Radio amateur enthusiasts from Holland. This model has various rare scales like circle frequency, Neper and Ohm resistance. It is in very good condition with and comes complete with pouch (marked Muiderkring) and Dutch manual. Both sides show are clear and the cursor is intact with additional markings. Some glue is visible behind the bottom scales and there is a small bend in the rule (price is adjusted accordingly). It measures ca 22,5  cm or 9 inches long. Check the attached video on how to work your vintage man tool : slide rule operation instructions!