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Gas Analyser- Portable 'Hays' type gas analyser, manufactured by Duguids Limited of Lymm, Cheshire. Number N668. Part of Coal Mining Collection. Gas Analyser- Portable 'Hays' type gas analyser
Grubb Parsons Infrared gas analyser (serial no.2023), 1950s Grubb Parsons Infrared gas analyser (serial no.2023) 1950
IRGA Infra Red Development Co gas analyser type SB/K no.532 range 0-15% Co 2.1 spare detecter cell no. 1896 Co 2/200 in transit case marked 3234 Co 2 at 50mm IRGA Infra Red Development Co gas analyser
Gas analyser in the style of Haldane, made at Chelsea College, London, 1963-1967 Gas analyser in the style of Haldane 1963-1967