A rectangular leather case contains an instrument made of metal rubber and glass. At one end of the instrument is a red rubber bulb used to draw air into a disposable glass indicating tube. The tube is held within the instrument’s metal frame. A knurled knob at one end of the instrument secures the indicating tube to the frame. The case also contains two paper instruction sheets, one of which includes a colour cart giving the colour results of the indicator tube. The other features a technical illustration of the apparatus.
Accession Number: 2016.phlt.1.99.1-2
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Primary Materials: Rubber, Leather, Metal, Glass
Markings:
Leather case: Length = 22, Width = 9.5, Height = 6.2; Instrument: Length = 4, Width = 2.9, Height = 20.5.
This instrument is used to detect the presence of carbon monoxide in the air. The relative colour change in the disposable glass indicating tube shows the quantity of carbon monoxide present.
Very good: The leather shoulder strap, present on 2016.phlt.1.101.1-3, has fallen off or been removed.
2016.phlt.1.101.1-3 is nearly identical.
Mine Safety Appliances (MSA). Pittsburgh, Pennsylvania.
Date of Manufacture:
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