Some volt-nuttery pics:
Measuring equipment, Keithley 2001, Keithley 2015, Advantest R6581T, HP3465A.
Pics of various types of precision resistors scrounged from old equipment and ebay.
Posting here because OP was curious.
The teal-colored resistors are also Fluke but they are much less fragile and less susceptible to humidity. The WW resistors on the mica cards are easily damaged.
The small black ones are Vishay Z-foil which is a different technology, not wire-wound, so ok for high frequency, etc.
Not included SMD types which are too small to show detail!