Spherometer
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1966.0436.001
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- OBJECT TYPE
- N/A
- DATE
- 1885
- ARTIFACT NUMBER
- 1966.0436.001
- MANUFACTURER
- Fauth Co.
- MODEL
- Unknown
- LOCATION
- Washington, District of Columbia, United States of America
More Information
General Information
- Serial #
- 2083
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- GLASS DISC/ METAL (BRASS?) CONSTRUCTION/ CW SOLID WOOD BOX, HAVING BRASS & IRON FITTINGS; SOME AREAS OF INTERIOR LINED WITH VELVET
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 27.2 cm
- Width
- 16.5 cm
- Height
- 12.0 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Exploration and Survey
- Category
- Instrument testing equipment
- Sub-Category
- N/A
Manufacturer
- AKA
- Fauth
- Country
- United States of America
- State/Province
- District of Columbia
- City
- Washington
Context
- Country
- Unknown
- State/Province
- Unknown
- Period
- AFTER C. 1885. DOMINION OBSERVATORY OPERATED C. 1905-1970. NRC MAY HAVE USED THE SPHEROMETER FOLLOWING 1970
- Canada
-
PRECISION MEASURING DEVICE USED AT DOMINION OBSERVATORY, OTTAWA (C.1905-1970). THIS SPHEROMETER MAY HAVE BEEN USED ON A VARIETY OF ASTRONOMY, SURVEYAND/OR METROLOGY INSTRUMENTS EMPLOYED THERE. PRESUMABLY IT WAS ALSO USED BY NRC, FROM WHOM THE MUSEUM ACQUIRED THIS SPHEROMETER. - Function
-
TO MEASURE THE CURVATURE OF SOLID SPHERICAL SURFACES, EITHER CONVEX OR CONCAVE. IT IS USED TO MEASURE THE INEQUALITY OF PIVOTS (POSTS OR TRUNNIONS ON WHICH A VARIETY OF SCIENTIFIC INSTRUMENTS REST), AND TO MEASURE THE CURVATURE OF LENSES. - Technical
-
MORE RELIABLE & EASIER TO USE THAN A CONTACT LEVEL, THE SPHEROMETER IS AN EXTREMELY ACCURATE MEASURING INSTRUMENT. WEAR OF MOUNTINGS ON A VARIETY OF SCIENTIFIC INSTRUMENTS (IE. TRANSITS, THEODOLITES, LEVELS, TELESCOPES, ETC.) WILL PRODUCE ERRORS IN READINGS: THESE INSTRUMENTS MUST BE CHECKED REGULARLY FOR SUCH WEAR * CONT - Area Notes
-
Unknown
Details
- Markings
- 'FAUTH & CO./ NO. 2083/ WASHN ('N' UNDERLINED) D.C.' STAMPED INTO METAL BENEATH GLASS DISC, AND HIGHLIGHTED WITH WHITE/ 'DOM.OBS 174' STAMPED INTO BASE/ 'DOM.OBS./ 174' INCISED IN LID OF BOX
- Missing
- THREE-LEGGED TRIVET WITH MICROMETER SCREW/ ONE LATCH MISSING FROM CASE
- Finish
- TOP & BOTTOM PANELS, CROSS-PIECE & PERFORATED INSIDE-FRAME HAVE BEEN BLUED. SCREWS & CYLINDRICAL SIDE PIECES HAVE BEEN PLATED & LACQUERED/ BOX IS STAINED; RED VELVET LINING COVERS SOME AREAS INSIDE BOX
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Fauth Co., Spherometer, circa 1885, Artifact no. 1966.0436, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1966.0436.001/
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