Altimeter

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OBJECT TYPE: 10,000 FT.
DATE: 1960–1970
ARTIFACT NUMBER: 1990.0277.001

MANUFACTURER: Wallace & Tiernan
MODEL: FA-181
LOCATION: Belleville, New Jersey, United States of America

More Information

General Information

Serial #: UU13869
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: ALL METAL CONSTRUCTION SAVE GLASS FACE AND PAPER SCALES & DIAL FACE

Dimensions

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

Length: 20.0 cm
Width: 19.5 cm
Height: 14.5 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Meteorology
Category: Atmospheric pressure measurement
Sub-Category: N/A

Manufacturer

AKA: Wallace Tiernan
Country: United States of America
State/Province: New Jersey
City: Belleville

Context

Country: Canada
State/Province: Unknown
Period: THIS TYPE OF ALTIMETER USED C.1960-1970S, AND POSSIBLY LATER
Canada: USED EXTENSIVELY BY GEODETIC SURVEY OF CANADA FOR CONTOURING WORK BEFORE PHOTOGRAMMETRIC PLOTTERS BECAME UNIVERSAL. IT WAS USED WITH THE TELLUROMETER & GEODIMETER TO OBTAIN BAROMETRIC PRESSURE WHICH IN TURN IS USED TO CORRECT THE DISTANCES MEASURED.
Function: TO MEASURE ALTITUDE. USED WITH TELLUROMETER & GEODIMETER TO DETERMINE BAROMETRIC PRESSURE.
Technical: SELF-BALANCING MECHANISM WAS A SIGNIFICANT ADVANCE IN ANEROID BAROMETER CONSTRUCTION. THIS ALTIMETER WAS USED FOR READINGHEIGHTS ON BAROMETER LINES RUN FOR CONTOURING. SUBSEQUENTLY THE RESULTS WERE USED FOR READING AIR PRESSURE FOR CORRECTION ELECTRONIC DISTANCE MEASURING EQ. DISTANCES.
Area Notes: Unknown

Details

Markings: 'W & T' STAMPED INTO CENTRE FRONT OF CASING. 'CAUTION/ CLOSE BREATHER TUBE/ FOR STORAGE OR TRANSPORT' '10,000' HANDWRITTEN IN BLACK MARKER ON TOP. '13869' HANDWRITTEN IN BLACK MARKER ON CASING, BELOW CLOSURE/ ALTIMETER SCALE FACE READS: 'ALTITUDE/ HUNDRED FEET/ S.M. TABLE 51/ REPLACE/ DESICCANT/ WHEN PINK/ SERIAL NO. UU13869 MODEL NO. FA-181/ WALLACE & TIERNAN/ BELLEVILLE, NEW JERSEY'; SCALE GRADUATED 30-66 AND 66-100 [HUNDRED FEET]. S.M. TABLE 51; AIR TEMP. & RELATIVE HUMIDITY CORRECTION FACTOR FOR ALTITUDE; AND TEMP. CORRECTION PER DEG. F. ABOVE OR BELOW 75oF SCALES ALL APPEAR INSIDE LID - SEE COPY IN SUPP. INFO. FILE
Missing: APPEARS COMPLETE
Finish: DRAB GREEN WRINKLE-FINISH ON CASING EXTERIOR; WHITE SCALE & ALTIMETER FACE PLATES
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Wallace & Tiernan, Altimeter, between 1960–1970, Artifact no. 1990.0277, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1990.0277.001/

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