Cambridge Vertical Vibrograph, numbered C94063, probably used in the Applied Physiology Department at the London School of Hygiene and Tropical Medicine, by the Cambridge Instrument Company Ltd, Cambridge, England, 1927 Cambridge Vertical Vibrograph 1927
"ASKANIA" Vibrograph (Spring-loaded, hand-held against vibrating structure, records by stylus on waxed paper). TASTSCHWINGUNGSSCHREIBER 1607, ser.no.28.b.1024/74, by Continental Elektroindustrie AG., Berlin, Germany, manufactured 1968, in hide carrying-case with strap "ASKANIA" Vibrograph 1968
