The Plumb Line Continuum, by Bruce Cynar. 176 Pages. Clothbound. Bruce Cynar's publication ,"The Plumb Line", produced between 1991 and 1994 was truly a labor of love. During the course the years that the magazine was produced, Mr. Cynar assembled and published information on all known makers of plumb bobs, all patented bobs and shared historical research on notable makers. The back issues have long been out of print. Those of you who missed the first chance to obtain this treasure trove of information would be well advised not to delay--our supply is limited. A great reference and entertaining reading. UNAVAILABLE (BK-0112)
