lab recording, 5/9/1987, 27°C (position-detection lamp?, Racal with B&K 1/2" or 1/4", tape no. R87-7)

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