My Theremin made from Bob Moog's design in Electronic Musician
The first view shows the whole theremin. including volume antenna (left), pitch antenna (right) and the control panel. The case is stained and varnished beech, with brass countersunk screws. The front panle is brushed aluminum. The antennas are nickel-plated brass sink fittings from the local hardware store.
This view shows a close-up of the panel. The four knobs are (left to right) pitch control, volume control, tone control, waveform control
Another close-up where you can see the jack socket (extreme left) for headphones or audio output to an external amplifer, the on-off switch (black rectangle) and the power jack (12V AC)