Base liner, stereoscopic

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OBJECT TYPE: N/A
DATE: 1945
ARTIFACT NUMBER: 1988.1254.001

MANUFACTURER: National Research Council
MODEL: Unknown
LOCATION: Ottawa, Ontario, Canada

More Information

General Information

Serial #: 3
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: CAST & MACHINED METAL/ GLASS LENSES & LAMP/ SYNTHETIC KNOBS

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: N/A
Volume: N/A

Lexicon

Group: Forestry
Category: Harvesting
Sub-Category: N/A

Manufacturer

AKA: NRC
Country: Canada
State/Province: Ontario
City: Ottawa

Context

Country: Canada
State/Province: Unknown
Period: 1945-1948
Canada: DESIGNED, MANUFACTURED, AND USED IN CANADA
Function: USED TO DRAW BASE-LINES ON AERIAL PHOTOS IN ORDER TO PROPERLY ALIEN THE BASE-LINE PRIOR TO CONSTRUCTING A RADIAL LINE PLOT
Technical: IMPROVED THE ACCURACY & SPEED OF RADIAL-LINE PLOTTING. PRIOR TO 1947 THIS WAS THE STANDARD METHOD OF PROVIDING MINOR CONTROL FOR COMPILING MAPS FROM AIR PHOTOGRAPHS. RADIAL-LINE PLOTTING WAS REPLACED BY THE SLOTTED TEMPLATE METHOD AFTER 1947, & THE BASE-LINER BECAME OBSOLETE SOON AFTER IT WAS BUILT (REF.1, P.1)
Area Notes: Unknown

Details

Markings: PLATE SCREWED TO VERTICAL SUPPORT ARM READS: 'MADE BY/ NATIONAL RESEARCH COUNCIL/ WORKSHOPS/ MONTREAL ROAD NEAR OTTAWA CANADA/ DEC. 10-45 SERIAL NO.3'/ ENGRAVED ON STRAIGHT EDGE: 'NO. 386 THE L.S. STARRETT CO./ ATHOL MASS. U.S.A./ TEMPTERED 30"'
Missing: N/A
Finish: BINOCULARS, BASE & SUPPORT - BLACK CRINKLE FINISH/ PHOTOPLATES, STRAIGHT EDGE AND OTHER METAL PARTS POLISHED METAL
Decoration: N/A

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National Research Council, Base liner, stereoscopic, 1945, Artifact no. 1988.1254, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1988.1254.001/

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