<html> Les, Some guitar tuners have a needle which will indicate how far sharp or flat a note is. Some even can display the pitch of seven octaves. I have a very old one made by Seiko. Something like that should serve the purpose that you are looking for. Terry Beckingham <blockquote type=cite class=cite cite>From: <a href="mailto:l-bartlett@sbcglobal.net">Leslie Bartlett</a> Sent: Thursday, December 27, 2012 11:14 AM To: <a href="mailto:pianotech@ptg.org">pianotech@ptg.org</a> Subject: [pianotech] OT   Two questions.             If there are folks like me, facing trifocals in glasses,  have any chosen to put the far range in the middle, and the mid-range in the top?  I’m having to get new glasses and I think they will recommend trifocals- me being 67 and all.               Do any of you carry a “tuner”, which will play a wide variety of notes, which will not push the button while in a tool case, thus running down the battery while it lies in the case?  I left my tuning fork somewhere, and have found that A-440 in itself does not really indicate if a pitch raise is necessary.  I’d like to have something with a slide switch instead of a push button. Thanks for any ideas. Les bartlett</blockquote></html>