lab recording, 18/6/1993, 25°C (position-detection lamp, Racal with B&K 1/2" or 1/4" tape no. R92-2)

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith