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AN OTHER PUBLICATION ABOUT PLUMB BOBS:

The first written publication on plumb bobs was from 1991 to 1994
“THE PUMB LINE, the definitive work on the simple plumb bob“ by Bruce Cynar from Fort Wayne, Indiana, U.S.A.
This was continued in 2005 by Nelson Denny from Hadlyme, Connecticut, and is available as “THE PLUMB LINE CONTINUUM.”  

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INTRODUCTION of THE PLUMB LINE CONTINUUM

!!!!! CLICK HERE FOR THE FULL VOLUME OF
"THE PLUMB LINE CONTINUUM" !!!!
                              183 pages, 45MB, PDF-file

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