The Midiclock, build by Erfindungsbuero Rest und Maier is a tiny
but fine solution for timing issues of all types. BPM can be
defined exactly by a clickable rotary knob built in a cigarette
pack-like steelcase that starts and stops the output of the clock
connected to two parallel Midi-jacks. it runs reliable in a way
that several sets and/or devices can be incorporated without any
timing problems. It takes a button to reset it on the fly and the
power is supplied by USB. That´s it!