Penny + Giles was founded in 1955, initially to provide flight test instrumentation. A product line of various transducers and recording equipment was developed and by 1957 the first Accident Data Recorder (ADR), based on magnetic recording of data on stainless steel wire (popularly known as the 'Black Box'), was test flown on a Gloster Meteor at the Boscombe Down Research Establishment, England. Their product range now include

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