General Information

Serial #

33

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

CAST & MACHINED METAL INSTRUMENT, WITH GLASS MIRRORS, LEATHER-COVERED HEADREST & PLASTIC CHINREST/ METAL CASE HAS WOODEN LINER IN BASE/ WOOD, RUBBER & METAL SUPPORTS & BRACES

Dimensions

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

Length

94.0 cm

Width

50.0 cm

Height

45.0 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

RYKER

Country

United States of America

State/Province

California

City

Berkeley

Context

Country

Canada

State/Province

Ontario

Period

Unknown

Canada

Unknown

Function

STEREOSCOPIC PLOTTER USED IN MAP PLOTTING FROM PAPER PRINTS OF AIR PHOTOS. PLOTTING IS RECORDED BY ATTACHED PANTOGRAPH.

Technical

Unknown

Area Notes

Unknown

Details

Markings

MFR'S PLATE ON INSTRUMENT FRONT BEARS FOLLOWING INFO.: 'THE RKYER MODEL PL-3/ STEREOSCOPIC PLOTTER/ WERNSTEDT-MAHAN TYPE./ BASED ON/ THE WERNSTEDT PLOTTING PRINCIPLE; AND/ ON THE MECHANICAL DESIGN OF THE U.S./ GEOLOGICAL SURVEY'S MAHAN PLOTTER./ PROPERTY OF [BLANK]/ SERIAL NO. 33/ U.S. PATENT NO. 2,303,099,/ ISSUED TO LAGE WERNSTEDT./ MANUFACTURED BY/ HARRISON C. RYKER INC.,/ 1000 ASHBY AVE. BERKELY 2, CALIF. U.S.A./ EXCLUSIVE LICENSEES'; IDENTICAL PLATE ON CASE TOP, EXCEPT SN '30' INCISED ON CASE/ '50' HANDWRITTEN IN RED GREASE PENCIL ON .2/ TAPE LABEL ON CASE TOP READS '762'

Missing

PHOTO-HOLDERS (2)/ MEASURING MARKS (2)/ PANTOGRAPH PARTS

Finish

BLACK CRINKLE-TEXTURED FINISH ON .2 ARM, & ON BASE, STEREO-VIEWER HOUSING & SELECTED COMPONENTS/ DULL GREY METAL POINT MECHANISMS & BASEPLATES/ SOME AREAS HAVE POLISHED SURFACES/ CASE PAINTED DULL GREEN WITH POLISHED BRASS CORNERS & CLASPS

Decoration

N/A