An analog VOM. DMM's are convenient but, being able to observe instantaneous needle deflections that can't be resolved by a DMM display can ease electrical troubleshooting.
If I may clarify slightly
VOM = Volt Ohm Meter
DMM = Digital Multi Meter
1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R