to make it practical on a tuning fork, that movement of the forks would need to correspond to the tooth size of the wheel. For a large tuning fork, its probably in the order of mm, so not beyond home shop manufacture
A ratchet and pawl limits the backlash to the distance between the teeth on the ratchet gear; think of it this way; if it were to turn less than the radial distance between the teeth on the ratchet gear, backlash could still happen; similarly in regular operation, it turns the ratchet gear slightly more than that distance, and there is backlash until the pawl engages.
scaling it up you'd get something like this: https://www.youtube.com/watch?v=u48n-jvo5N0
to make it practical on a tuning fork, that movement of the forks would need to correspond to the tooth size of the wheel. For a large tuning fork, its probably in the order of mm, so not beyond home shop manufacture