Nocturnal
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Ingenium,
1991.0020.001
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- OBJECT TYPE
- N/A
- DATE
- 1650–1700
- ARTIFACT NUMBER
- 1991.0020.001
- MANUFACTURER
- Unknown
- MODEL
- Unknown
- LOCATION
- England
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- WOOD (PEARWOOD)/ BRASS PIVOT
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 25.8 cm
- Width
- 12.5 cm
- Height
- 1.2 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Marine Transportation
- Category
- Navigation instruments & equipment
- Sub-Category
- N/A
Manufacturer
- AKA
- Unknown
- Country
- England
- State/Province
- Unknown
- City
- Unknown
Context
- Country
- Unknown
- State/Province
- Unknown
- Period
- GENERAL: 17TH & EARLY 18TH CENTURIES
- Canada
-
Unknown - Function
-
INSTRUMENT USED BY MARINERS TO DETERMINE LOCAL TIME AT NIGHT, TO ESTABLISH THE TIMING OF THE FLOOD TIDE, & TO MEASURE LATITUDE. NOCTURNAL FUNCTIONED BY VIEWING POLARIS THROUGH CENTRAL SIGHT & THEN ALIGNING INSTRUMENT'S INDEX ARM WITH EITHER URSA MAJOR OR URSA MINOR. - Technical
-
THENOCTURNAL IS A FUNDAMENTAL PIECE IN THE HISTORY OF MARINE NAVIGATION TECHNOLOGY. IT WAS A DESCENDANT OF THE PLANISPHERIC ASTROLABE& A PRECURSOR TO THE DAVIS QUADRANT & HADLEY OCTANT, BOTH OF WHICH WERE REFINEMENTS OF THE TECHNIQUES REFLECTED IN THE NOCTURNAL. NOCTURNALS WERE WIDELY USEDBY MARINERS IN THE 17TH & EARLY 18TH CENTURIES & WERE SECOND IN IMPORTANCE ONLY TO THE COMPASS AS INSTRUMENTS OF NAVIGATION (2). - Area Notes
-
Unknown
Details
- Markings
- INCISED BLACK SCALES, NUMERALS, & LETTERING READING 'BOTH BEARS' & FOR MONTHS OF THE YEAR
- Missing
- N/A
- Finish
- NATURAL WOOD FINISH/ BRASS COLOURED METAL
- Decoration
- INCISED BLACK PARALLEL LINES
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Unknown Manufacturer, Nocturnal, between 1650–1700, Artifact no. 1991.0020, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1991.0020.001/
FEEDBACK
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