Z-Y Bridge Technical Data: General Radio, model 1603A User Manual: GR 1603A Manual Manufacturer Web Site: http://www.ietlabs.com/genrad_history/historic_appnotes/ Leased By: David Kent Safety Considerations: Certification Process: Other resources: http://conradhoffman.com/GR1603A.htm http://www.pa4tim.nl/?p=4456 http://www.ietlabs.com/pdf/GR_Experimenters/1955/GenRad_Experimenter_July_1955.pdf
