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Parkinson-Cowan laboratory gas test meter

Parkinson-Cowan laboratory gas test meter

Parkinson-Cowan laboratory gas test meter

Parkinson-Cowan laboratory gas test meter

Parkinson-Cowan laboratory gas test meter

Parkinson-Cowan laboratory gas test meter

Wet, laboratory test gas meter made by Scientific & Projections Ltd from a non-magnetic metal/alloy (brass?) painted green, date 1930-1950, with MofP33 lead seal tag. Large sweep hand to circular clock-face dial measuring 1/2 cu ft/rev. (Tingley catalogue No. 239).

Wet, laboratory test gas meter made by Scientific

1930-1950
Wet, laboratory test gas meter made by Scientific & Projections Ltd from a non-magnetic metal/alloy (brass?) painted grey, date 1930-1960. Large sweep hand to circular clock-face dial measuring 1/2 cu ft/rev. (Tingley catalogue No. 243).

Wet, laboratory test gas meter made by Scientific

1930-1960