A quick look at Dave’s Advantest R6142 Voltage and Current Source.
Can it be used as a current reference for the uCurrent?
A look at the stability with temperature and time, and absolute calibration of the unit.
Is it an ebay score, or ebay junk?
Looking at the new $80 Zoyi/Zotech ZT703S Dual channel 50MHz 25,000 count 0.05% handheld oscilloscope/multimeter …