Short answer: No, not legally.
The Polytechnisch Zakboek is a commercially published copyrighted work (currently by Wolters Kluwer). The latest editions (e.g., 55th or 56th edition) are still in print and sold for around €150–€200. Distributing or downloading a free PDF of the current edition is piracy, and links to such files are not provided here. polytechnisch zakboek pdf
The search volume for polytechnisch zakboek pdf has exploded in the last five years. Here is why engineers are desperate for the digital version: Short answer: No, not legally
If you find a polytechnisch zakboek pdf, you are unlocking a treasure chest of data. Here is the typical table of contents: Distributing or downloading a free PDF of the
It is a standard Dutch reference work for engineering, construction, and technical sciences (comparable to Perry's Chemical Engineers' Handbook or Machinery's Handbook, but focused on Dutch and European standards). The publisher is Koninklijke Nijgh Versluys.