Dr. Jon Shapiro, founder and president of GiCi?, was the engineering manager for Machlett labs in Stamford, CT where the Dynalyzer? was invented. Dr. Shapiro nurtured the Dynalyzer II and III programs at Machlett, and has had more experience with the repair and calibration of this instrument than any one else. GiCi also calibrates voltage dividers, DVMÂ's, oscilloscopes and digital multi meters. We stock test cables for the Dynalyzer and voltage dividers.