Projector

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Ingenium, 1987.1185.015
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OBJECT TYPE
N/A
DATE
1955–1965
ARTIFACT NUMBER
1987.1185.015
MANUFACTURER
Bausch & Lomb
MODEL
Unknown
LOCATION
Unknown

More Information


General Information

Serial #
N/A
Part Number
15
Total Parts
17
AKA
N/A
Patents
N/A
General Description
PRINCIPALLY METAL/ GLASS OPTICS/ SOME SYNTHETIC KNOBS, SWITCHES, HOSES, ETC.

Dimensions

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

Length
17.0 cm
Width
12.2 cm
Height
38.2 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
Bausch Lomb
Country
Unknown
State/Province
Unknown
City
Unknown

Context

Country
Canada
State/Province
Ontario
Period
C. 1965-1970
Canada
DESIGNED BY SAMUEL G. GAMBLE, DEPT. OF MINES & TECHNICAL SURVEYS, CANADA & MFD. BY PHOTO SURVEYS CORP., TORONTO ON. USED BY ENERGY, MINES & RESOURCES (EMR) CANADA IN 250,000 SERIES RECONNAISSANCE MAPPING PROJECT (AS PER MR. L. SEBERT)
Function
TO PROJECT STEREOSCOPIC MODEL IN ORDER TO INTERPRET, MEASURE & PLOT DATA GATHERED FROM AERIAL SURVEY PHOTOGRAPHS.
Technical
DESIGN PERMITS A CLOSE-SPACED PATTERN OF LUMINOUS DOTS TO BE PROJECTED & FORMS AN ELEVATION REFERENCE PLANE IN THE STEREOMODEL. THE 2 PROJECTORS ARE RAISED OR LOWERED IN UNISON, MOVING MODEL DATUM WITH RESPECT TO THE REFERENCE PLANE. CONTOURS & PLANIMETRIC DETAIL ARE TRACED FREEHAND ON MAP SHEET ON TABLE BELOW (REF.1) "The Gamble stereoplotter was designed by Samuel G. Gamble, Dept. of Mines & Technical Surveys, Canada, & mfd. by PSC Applied Research Ltd., of Toronto, Canada. This instrument utilizes either multiplex or Balplex projectors to form the stereomodel in anaglyphic projection. A very close-space pattern of luminous dots is projected to form an elevation reference plane in the stereomodel. Raising & lowering of the projectors in unison moves the model datum with respect to the projected elevation reference plane. Contours & planimetric detail are traced freehand on a map sheet mounted directly upon two supporting tables. The handheld tracing pencil thus becomes the floating mark in the projected model." (Ref. 1, p.560)
Area Notes
Unknown

Details

Markings
Triangular ‘B&L' plate screwed to projector front.
Missing
N/A
Finish
COMPONENTS SILVER METAL/ BLACK CRINKLE-TEXTURED FINISH
Decoration
N/A

CITE THIS OBJECT

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

Bausch & Lomb, Projector, circa 1955–1965, Artifact no. 1987.1185, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1987.1185.015/

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