I haven't had too many problems with the snarks(clip on) for both bass guitar and the double. I situate it in between the E and A tuners on the peg box and with only minor shifting around can get a clear read on the E.
The most convenient tuner is your piano... You have to be just as out of tune as the piano is in order to be in tune.
The most convenient tuner is your piano... You have to be just as out of tune as the piano is in order to be in tune.