It is kind of a waste of $10 when the plans of Dr. Clark's latest zapper, complete with the latest circuit that she recommends is all given RIGHT HERE for FREE in the Zapper Images Forum - not to mention you can buy Dr. Hulda Clark 's NEWEST BOOKS USED at AMAZON for like $10-$12, or simply ask for an interlibrary loan, or see her SYNCROMETER manual for FREE here - http://www.drloyd.com/syncrometer.pdf
FREE VIDEO CLIPS TEACHING YOU STEP BY STEP HOW TO BUILD YOUR OWN ZAPPER at http://www.clarkzapper.net/ This is just a SUPER great site! IT ALSO TEACHES YOU FOR FREE how to TEST your own ZAPPER!!!