Wolf-Tuner   setting

Violin & Viola

 In the peg box

Sideways set on the string, near the upper peg

                                                   Titanium and gold Tuner                                                    Silver Tuner

                

Tuners can be used simultaneously, one in the peg box and another behind the bridge

Behind the bridge

  Sideways set on the string close to the lining

                                                           Silver Tuner                                                              Gold Tuner

      

"Butterfly setting"

Sideways set in an opposite way

The Titanium Tuner at the top, touching the Silver Tuner                    The Silver Tuner at the bottom, slightly over the lining