Projector part

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OBJECT TYPE: N/A
DATE: 1955–1965
ARTIFACT NUMBER: 1987.1185.016

MANUFACTURER: Bausch & Lomb Optical Co.
MODEL: Unknown
LOCATION: Rochester, New York, United States of America

More Information

General Information

Serial #: KA 122
Part Number: 16
Total Parts: 17
AKA: projector base with mounting bracket
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: 53.0 cm
Width: 13.5 cm
Height: 36.0 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: United States of America
State/Province: New York
City: Rochester

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: Plate screwed to frame bears following info.: ‘BAUSCH & LOMB OPTICAL CO./ ROCHESTER, N.Y. U.S.A./ U.S.A. PATENT/ [B&L LOGO]/ 1,980,657/ 2,263,341/ 2,164,847/ SERIAL NO. KA122'. Fitted with 2 scales: 0-70 & 0-200 [mm?]/ ‘F89' incised by hand on optical housing
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 Optical Co., Projector part, circa 1955–1965, Artifact no. 1987.1185, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1987.1185.016/

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