Throwback Thursday: Box Strength Calculator


Box Strength Calculator and FPL history book.

We don’t quite know how it works anymore but this five-dial Box Strength Calculator was developed at FPL in cooperation with the “Quartermaster Food and Container Institute for the Armed Forces.”

This particular tool was once used by the late John W. Koning, Jr., a beloved FPL employee who spent much of his long career (1961 to 1986) working to develop more durable paperboard and corrugated cardboard packaging materials.

After “retirement” (he never really quit coming in) Koning also authored the book¬†Forest Products Laboratory 1910 – 2010: Celebrating a Century of Accomplishments, a¬†thoroughly amazing synthesis of FPL’s achievements in wood research published by UW Press in 2010.