Eyepiece

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Ingenium, 1970.1518.003
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OBJECT TYPE
N/A
DATE
1906
ARTIFACT NUMBER
1970.1518.003
MANUFACTURER
Warner & Swasey
MODEL
Unknown
LOCATION
Cleveland, Ohio, United States of America

More Information


General Information

Serial #
N/A
Part Number
3
Total Parts
28
AKA
N/A
Patents
N/A
General Description
METALS (INCLUDING BRASS AND SILVER); GLASS OPTICS

Dimensions

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

Length
N/A
Width
N/A
Height
N/A
Thickness
N/A
Weight
N/A
Diameter
2.3 cm
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
No markings visible.
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
EYEPIECE HAS A DARKENED/BLACK FINISH.
Decoration
N/A

CITE THIS OBJECT

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

Warner & Swasey, Eyepiece, before 1906, Artifact no. 1970.1518, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1970.1518.003/

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