The Fender FT-004 chromatic tuner has a weak point that is prone to breakage. The part snaps in such a way that gluing it is not very effective. This is a drop-in replacement, with all dimensions as close as I could make them - though I did add a slight fillet at the weak point.

I drew this in OnShape. The original is here:
https://cad.onshape.com/documents/75bb05fd9ea6a78eca20166b/w/c312ef5e99eae7f35a28a10f/e/32ff786f529eff1c9346d05a