In 1983, David Gilmour replaced the Fender tremolo system on his guitar with a Kahler Tremolo System, featuring locking tuners. This modification was utilized during the recording and tour for his album "About Face," as documented by Bjorn on Gilmourish under the section "David Gilmour’s Black Strat."

At 1:04, he said he swapped this tremolo on the Gibson Explorer in gold.

Jerry''s signature G&L Rampage guitars have Kahler tremolos.

Dave used Kahlers on most of his guitars during his time with Jackson. You can see one on his guitar in the photo.

Before he stopped using tremolos, Paul used to play Kahlers, as clearly seen in the photo.

In this ad for Marty's signature Kelly, you can see it has a Kahler bridge.

His Tokai LP-type guitar has Kahler vibrato system according this article.

Kerry on Floyd Rose vs Kahler: "You learn on one or you learn on the other, and I learned on a Kahler."

at 0:10 you can see a Kahler tremolo unit on both of Jason's late 80's Carvin guitars.

On his website, Tipton states:

The stage gear is the second most important thing after the music itself. It has to be something that you can rely on and feel not only safeness but also comfort. Glenn tells us a bit about his equipment:

“Each tour is different and requires different units or amps in the racks depending on what songs we are playing. It’s forever changing and I’m always experimenting with new equipment and I think it always will change and evolve on stage. On the stage guitars, I use Kahler tremolo systems. The guitars are strung with Ernie Ball RPS-10 strings, which are specially reinforced for the Kahler tremolo systems. My other considerations for stage work are the pickups: They’ve got to be hot!! Most of my stage guitars are fitted with EMG 81s, which are of course active. All the EMG 81s are wired with the batteries in series so they run the pickups at 18 volts. That makes them last longer and the pickups sound hotter, with more edge and poke. This is partly for the signal-boosting active circuitry and partly to avoid worrying about the danger of picking up the local radio station midway through a solo. In later years I’ve used modified EMG’s (GTX’s) as well which are specially designed for me.”

Used on his Schecter Strat:

"As seen on the cover of 'Timelapse'. Heavily modded to incorporate a Kahler trem and controllers for the Roland GR-300 guitar synth."

You can see a Kahler on Steve's black Les Paul.