ow sorry. Don't have any idea that rubber damages nitro finishes though.
Skybox, if you have plans of selling it. let me know. My bandmate wants a clip tuner.
Thanks for all your responses guys. I used it at a gig last night with a Gibson Les Paul Premium Plus. Played 15 songs straight. Tuned pretty much in between every song.
I love its size coz I could tune quickly and then stash it back into my jacket pocket. I didn't leave it on the headstock as some of you suggested. Mukhang di naman nag react sa Nitro finish.
Nico, I would definitely recommend this to your bandmate. It's cheap as chips and it works as expected.