<p style='text-align: justify;'>Photograph of the research room for the IMV machine in the High Tension Laboratory showing the counting equipment from the front. The edge of the deflecting magnet is on the right. In the centre is the counting equipment with the detector and receiver (bottom), the amplifier (centre in black box) and the scalar counter (top). The designers and inventors were C.E. Wynn-Williams and W.B. Lewis.</p>