Recording Ammeter, by Elliott Brothers (London) Ltd, London, Early 20th Century

Subject: Electronic instruments
Item type: Object
Makers: Elliot Brothers (London) Ltd.
Provenance: Presented by the Marconi Corporation in 2003.
Primary inscriptions: ELLIOTT BROTHERS (LONDON) LTD / AMMETER. / INST.. NO.311862 / O.T. RATIO 500 /50/5 / RANGE 0-50 AMPS / PERIODICITY 50 [SYMBOL] / SPEED OF CHART 1" PER HOUR / PER MINUTE'
Physical material: Leather; Wood; Glass; Paper; Metal; Bakelite?
Object type: Electronic instrument
Dimensions: Height: 463mm Width: 192mm Depth: 184mm
Inventory No: 13149
Accession Number: 2003-11

Description

Recording Ammeter in wooden casing with leather strap and metal fittings. Glass panel at the front displays chart paper. Tested in 1950.