Scale

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Ingenium, 2002.0575.002
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OBJECT TYPE: ADJUSTABLE
DATE: 1970
ARTIFACT NUMBER: 2002.0575.002

MANUFACTURER: Jones Medical Instrument Co.
MODEL: Unknown
LOCATION: Chicago, Illinois, United States of America

More Information

General Information

Serial #: N/A
Part Number: 2
Total Parts: 3
AKA: N/A
Patents: N/A
General Description: synthetic scale; metal fittings

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 17.4 cm
Width: 6.0 cm
Height: 3.0 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Medical Technology
Category: Medical equipment
Sub-Category: N/A

Manufacturer

AKA: Jones
Country: United States of America
State/Province: Illinois
City: Chicago

Context

Country: Canada
State/Province: Ontario
Period: Probably used c. 1970s+. Not used after 1981.
Canada: Part of a large collection of medical artifacts, archival material & trade literature transferred to CSTM in 2002 from the former History of Medicine Museum, Toronto On. Originally donated to Academy of Medicine- History of Medicine Museum by Dr. S.W. Epstein, 407-25 Leonard Ave., Toronto, ON M5T 2R2, in 1981.
Function: To provide visual display of measured quantity. Specifically, provides reference for rebreathing estimate of arterial partial pressure of carbon dioxide on one side; provides reference for percentage of carbon dioxide humidified gas on reverse.
Technical: Adjustable, 2-sided scale used on direct-reading, portable instrument used to diagnose ventilatory failure.
Area Notes: Unknown

Details

Markings: One side of scale reads "SCALE 1/ REBREATHING/ ESTIMATE OF/ ARTERIAL Pco2/ (MM hG)": dual readings of 0 to 25+ are labelled "OVERVENTILATION"; -30 to 50 are labelled "NORMAL"; and 50 to 100 are labelled "UNDERVENTILATION". Second scale reads "SCALE 2/ % CO2/ HUMIDIFIED/ GAS"; scale marked along both sides 0-15, labelled in increments of 1, and divided in increments of .50.
Missing: This component is complete. Fastened to analyzer with silver metal screw & washer.
Finish: Black text & markings printed on rigid white synthetic scale.
Decoration: N/A

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Jones Medical Instrument Co., Scale, 1970, Artifact no. 2002.0575, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/item/2002.0575.002/

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