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Polytechnisch Zakboek (Polytechnical Pocketbook) is a legendary Dutch technical reference work, often called the "Engineer’s Bible". First published on January 6, 1928, by the Koninklijke PBNA

has been the ultimate companion for Dutch-speaking technicians. Here is how it became a staple of the industry: The Original Vision (1928):

The manual typically covers a wide range of engineering disciplines, including:

Content and Structure

with the 52nd edition, allowing the massive amount of data to be searchable on a computer. Why Technicians Still Use It

Mechanical Engineering: Information on machine elements, gear systems, and fluid mechanics.

, it has evolved from a small pocket diary into a massive compendium of nearly 2,000 pages. The Story of the "Engineer's Bible" For nearly a century, the Polytechnisch Zakboek