3M ATG 700 Adhesive Transfer Gun
3M Transfer Tapes are acrylic adhesives that are supported on a paper liner.
The roll is pressure sensitive, so when pressing adhesive side down on to surfaces such as foam or plastic, they bond instantly. When the liner is removed, the adhesive transfers to the surface, ready to attach itself to whatever you need to join.
For unrivalled accuracy 3M have developed the ATG Adhesive Transfer Gun that uses reverse wound tape, which collects the used paper liner so there's no tidying up