This is a gizmo that's been slipped on the rear of a standard #keyboard (shown is a borrowed fancy keyboard that was unnamed). Wanted to keep the keyboard for use as intended but also able to use to operate a #laser machine. To run program F!, F3 and then Enter had to be pressed separately. Screws over those keys are adjusted so as to time each press of the lever would press the keys in order. The #tally_counter was an afterthought but there was just enough room to be included at a later date. Constructed from 1/4" laser cut acrylic with clear #acrylic_hinges.