You need this:

https://www.petersontuners.com/products/stroboClipHD/?srsltid=AfmBOoolS_r5kc5N1MJifDv-n657AIPyeSK9lF8QJqkJ5pEbvWCz23CG

From the website:
Quote
The Peterson StroboClip HD™ (SC-HD) has the same tenth-of-a-cent accuracy as all Peterson Strobe Tuners.

This versatile tuner comes complete with a bright high-definition screen, over 50 Sweetened™ tunings, alternate temperaments for a vast array of string and wind instruments...

and soft rubber-lined jaws to protect your instrument's finish while offering a firm grip for maximum signal tracking.


I've had this headstock tuner for a while now, but hadn't used it much.
Used it a bit on my acoustic guitars, but I seldom pick those up anymore (having too much fun with other instruments)

I most often play electric through software amps on my computer or through the Spark app - which all include convenient tuners.
And as Kris Kristofferson used to say, they are "...close enough for Country"
So I kinda neglected (forgot about) the Peterson.

A couple of months ago, I decided to actually learn how to play my mandolin. It's been just hanging on the wall for 30 years.
Trying to tune a mandolin with a "bouncing needle tuner" is Hell.

So I dug out the Peterson.
Heaven.


Cannot recommend it highly enough. Especially for mandolin.
It's great for my bass, too (hard to trust those needles for that, too)

Great having the "sweetened" selections.
(Check all 50 near the bottom of the website page)


$60 at Sweetwater

Or Amazon...


Get yourself a Christmas gift you'll actually use...
smile


A side note about tuning mandolin...

Andy Woods (one of our RealTracks mandolin guys) recommends not using a mechanical tuner for the second string in a pair.
He says use it for the first one and tune the second to match the first by ear.
So I figured I'd pass that along.
It's a good way to check your ear, too. Once you settle on an "ear tune" for that second, see if the strobe agrees...

150+ Songs produced using BIAB RealTracks
And 50 more...
and some more...