Micrometer
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1970.1518.001
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- OBJECT TYPE
- FILAR/TELESCOPE
- DATE
- 1906
- ARTIFACT NUMBER
- 1970.1518.001
- MANUFACTURER
- Warner & Swasey
- MODEL
- Unknown
- LOCATION
- Cleveland, Ohio, United States of America
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 28
- AKA
- N/A
- Patents
- N/A
- General Description
- METALS (INCLUDING BRASS AND SILVER); GLASS OPTICS; SOME SYNTHETIC FITTINGS. RUBBER INSULATION ON SOME ELECTRICAL WIRES. LEATHER COVER ON.6 LAMP ASSEMBLY TUBE. WOODEN CASE HAS FELT PADS.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 37.5 cm
- Width
- 23.0 cm
- Height
- 11.2 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Astronomy
- Category
- Observation equipment
- Sub-Category
- N/A
Manufacturer
- AKA
- Warner Swasey
- Country
- United States of America
- State/Province
- Ohio
- City
- Cleveland
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- THIS MICROMETER MFD FOR USE C. 1906+
- Canada
-
FILAR MICROMETER MFD BY WARNER & SWASEY, FOR USE WITH 15-INCH TELESCOPE AT DOMINION OBSERVATORY IN OTTAWA, ONT. - Function
-
USED TO MEASURE SMALL DISTANCES PRESICELY. THIS MICROMETER USED WITH 15-INCH TELESCOPE, FOR MEASURING ORIENTATION AND SEPARATION OF DOUBLE STARS. (REF. 1) - Technical
-
FILAR MICROMETER FURNISHED WITH 5 POSITIVE (REGULAR) EYEPIECES AND 3 DARK EYEPIECES FOR SOLAR OBSERVATION. FITTED WITH ELECTRIC ILLUMINATION DEVICE. POSITION CIRCLE IS GRADUATED ON SILVER TO HALF DEGREES, AND IS READ TO FIVE MINUTES BY TWO VERNIERS. (REF. 2) USED FOR MEASURING ORIENTATION AND SEPARATION OF DOUBLE STARS LOOKING FOR BINARY STARS (ORBITING AROUND EACH). (REF. 1) - Area Notes
-
Unknown
Details
- Markings
- "WARNER & SWASEY/ CLEVELAND, OHIO" marked on instrument. All scales, circles, etc. marked.
- Missing
- SEVERAL SMALL SCREWS USED TO SECURE COLOUR FILTERS INSIDE LAMP ARE MISSING. LARGER SCREW (ONE OF TWO) USED TO SECURE LAMP HOUSING IS MISSING. GREEN WIRES TO LAMP ARE RUBBER INSULATED- 1960S VINTAGE.
- Finish
- BRIGHT LACQUERED BRASS FINISH ON SELECTED AREAS OF.1 MICROMETER; OTHER AREAS HAVE DULLER (BRASS) FINISH. MOST EYEPIECE HOUSINGS AND SELECTED COMPONENTS OF MICROMETER HAVE DARKENED/BLACK FINISH.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Warner & Swasey, Micrometer, before 1906, Artifact no. 1970.1518, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1970.1518.001/
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