Microvolt Services Not able to do precise instruments like Keithley Electrometers. 5 to 6 digits. Peter Honeywill.
Repair Metrology Services Do Keithley and Tektronix repairs and calibrations.
Peter Honeywill from Microvolt Services say ComTest is new Tektronix (Keithley) agents.
LabCom Brackenfell. They do not do major repairs. For that they use Micro Volt. Pieter Rossouw refered me to them. Guy there was one of his co-workers at iNala