Base liner, stereoscopic

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Ingenium, 1987.1182.001
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OBJECT TYPE: N/A
DATE: 1946
ARTIFACT NUMBER: 1987.1182.001

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

More Information

General Information

Serial #: 4
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: CAST & MACHINED METAL/ GLASS LENSES/ SYNTHETIC KNOBS

Dimensions

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

Length: 103.2 cm
Width: 50.0 cm
Height: 54.7 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Exploration and Survey
Category: Photogrammetry
Sub-Category: N/A

Manufacturer

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

Context

Country: Canada
State/Province: Ontario
Period: 1946 TO 1948
Canada: DESIGNED BY, AND CONSTRUCTED AT, NRC LABS IN OTAWA, ON CANADA.
Function: USED TO DRAW BASE-LINES ON AERIAL PHOTOS, IN ORDER TO PROPERLY ALIGN THE PHOTOS 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 BASE OF STEREO VIEWER MOUNTING INCISED: 'MADE BY/ NATIONAL RESEARCH COUNCIL/ WORKSHOPS/ MONTREAL ROAD NEAR OTTAWA CANADA/ JUNE 1946 SERIAL NO. 4'/ TAPE LABEL ON LEFT PLATEN READS: '663-9'/ INCISED ON RULE: 'No. 386 THE L.S. STARRETT CO. ATHOL MASS. U.S.A. 30"'/ 'BASELINE MACHINE' HANDWRITTEN IN PENCIL ON CRATE FRONT
Missing: NONE
Finish: STEREO VIEWER, VIEWER SUPPORT & BASE HAVE BLACK CRINKLE- TEXTURED FINISH/ BRUSHED & POLISHED SILVER METAL COMPONENTS
Decoration: N/A

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National Research Council Canada, Base liner, stereoscopic, 1946, Artifact no. 1987.1182, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1987.1182.001/

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