Jeff wrote: >I have both the Keithley 155 and several Fluke 845AB's. >I too prefer the Keithley 155 over the Fluke and I'm not a big fan >of Keithley equipment. There's a 155 with a halfway reasonable BIN on ebay right now. It has the rare and (IMO) desirable 1554 AC power supply. I doubt it will be there long. (I have no connection to or knowledge of the seller.) There are manuals on ko4bb.com. Best regards, Charles