I inherited an original Fluke 87 that "didn't work". Turns out the 9V battery connector had a broken wire. Easy fix.
Unfortunately it's pretty far out of cal. I found the service manual and the 87 cal procedure is surprisingly minimal. The whole procedure is pretty much:
1) Set DC volts at 3.500VDC, make adjustment if necessary
2) Set AC Volts at 3.513VAC 50Hz, make adjustment if necessary
3) Set AC Volts at 100.0VAC 20kHz, make adjustment if necessary
4) Set AC Volts at 3.500VAC 10kHz, make adjustment if necessary
5) Set AC Volts at 35.00VAC 10kHz, make adjustment if necessary
That's it. I was surprised there was no current or resistance procedures. The manual page is attached.
I don't have a calibration standard, but I do have access to an in-cal 6.5 digit meter, and a voltage source that should be able to do the required voltages and frequencies. Anyone see a problem with adjusting the voltage source using the in-cal meter to the required values and then tweaking the 87 based on that? I'm not expecting lab quality certified cal, and don't plan on using the meter for anything serious. The meter is probably 30 years old. Just wondering if there is some magic to an actual calibrator that I can't recreate with a voltage source and a higher precision meter than what I'm trying to adjust to set the test signal levels.