lab recording, 17/7/1986, 27°C, position-detection lamp (Racal with B&K 1/4" with protective screen, tape no. R86-4)

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