not enough hands -- setting A49 to fork

[Charles Neuman]

When setting A49 to the fork, I like to compare F21-fork with F21-A49. It
seems that I need three hands to do this: One to play F21, one to hold the
fork or play A49, and one to move the lever.

Since I only have 2 hands, I keep F21 held down by putting a mute sort of
sideways and resting on the backchecks of the neighboring notes (on a
vertical piano) so that it blocks F21 in the depressed position. Or I can
jam a mute along the top of the key to keep it down, but that seems like
it would mess up the felt right above the keytop. Once it's held down,
then I can compare F21-fork and then tune F21-A49 to that same beat rate.

Are there any other techniques I should consider?

Charles Neuman
PTG Associate, Long Island-Nassau