General Information

Serial #

N/A

Part Number

2

Total Parts

2

AKA

N/A

Patents

N/A

General Description

PAPER; INK

Dimensions

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

Length

12.7 cm

Width

6.1 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Medical Technology

Category

Instruments

Sub-Category

N/A

Manufacturer

AKA

Zeiss

Country

Germany

State/Province

Unknown

City

Munich

Context

Country

Canada

State/Province

Ontario

Period

THIS TYPE OF TEST CHART PROBABLY USED C.1920S-1960S, AND POSSIBLY LATER. [SEE REF.3]

Canada

Unknown

Function

TO TEST STEREOSCOPIC VISION

Technical

EXAMPLE OF SIMPLE, EFFECTIVE TESTING METHOD USED TO MEASURE STEREOSCOPIC VISION. STEREOSCOPIC VISION IS DEFINED AS AN OBSERVER'S ABILITY TO VIEW AN OBJECT OR 2 DIFFERENTPERSPECTIVES OF AN OBJECT, IN ORDER TO OBTAIN THE MENTAL IMAGE OF A THREE-DIMENSIONAL MODEL (REF.2)

Area Notes

Unknown

Details

Markings

.1-.2 FACE OF EACH CARD DEPICTS TWO CIRCLES, EACH CONTAINING A MIRROR IMAGE OF THE SYMBOLS CONTAINED WITHIN THE OTHER. INCLUDES TEXT: 'ZEISS/ AEROTOPO/ Prufungstafel/ fur/ stereoskopisches Sehed.' & '306'. GERMAN, FRENCH & SPANISH TEXT APPEARS ON BACK, WITH ENGLISH 'Test Chart for sterescopic vision, with geometrical designs. For Key, see enclosed leaflet', 'All rights reserved' & 'ZEISS-AEROTOPOGRAPH MUNCHEN/ Printed in Germany'

Missing

NONE

Finish

OFF-WHITE PAPER; BLACK INK

Decoration

N/A