At 11:27 PM 6/6/2011, Jack wrote: >I need wiring data and operating instructions for the precision model 612 tube tester http://oldradios.50webs.com/precision/ The "Schematics 614 & 614" link should read "612 & 614." Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA http://plymouthcolony.net/starcity/radios/radtop.html