|Description||Press-cuttings describing 11-tin magnet built by Metropolitan Vickers Electric Company, Manchester, for Blackett who had it transported to London and installed in a wooden hut ('Magnet House') for use by his Birkbeck team. 1934|
Drawing of 'Approx. Arrgt. of magnet and fan' in one another hand with some notes on dimensions added by Blackett, 1934.