General Information

Serial #

18689

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

GLASS. STORED IN WOODEN CASE, LINED WITH CORK; BRASS HINGES & HOOK CLOSURE

Dimensions

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

Length

105.8 cm

Width

10.7 cm

Height

3.2 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Mathematics

Category

Drawing & measuring instruments

Sub-Category

N/A

Manufacturer

AKA

Zeiss

Country

German Democratic Republic

State/Province

Unknown

City

Jena

Context

Country

Canada

State/Province

Ontario

Period

Unknown

Canada

Unknown

Function

USED TO MEASURE LENGTH, OR THE DISTANCE BETWEEN TWO POINTS

Technical

EXAMPLE OF 1-METRE RULE ON GLASS: SCALE IS PHOTOGRAPHIC COPY. HIGHLY PRECISE INSTRUMENT, 1-10 AND 90-100 CM SEGMENTS RULES TO 0.1MM; 10-90 CM SEGMENT RULED TO 1 MM.

Area Notes

Unknown

Details

Markings

RULE MARKED 'CARL ZEISS/ JENA/ 18689'. SCALE DIVIDED 0-1000: 1-10 & 90-100 CM SEGMENT DIVIDED TO 0.1 mm; 10-90 CM DIVIDED BY 1 MMINCREMENTS./ HANDWRITTEN NOTE TAPED INSIDE CASE READS: 'DO NOT CLEAN/ WITH ANYTHING'; SECOND HANDWRITTEN NOTE READS: 'Photographic Copy - Approx. 0.2 mm long ____.01'. HANDWRITTEN ON TAPE LABEL ON CASE TOP IS EQ. NO. [?] '670-6'

Missing

NONE

Finish

GLASS HAS PALE GREEN TINT, WOODEN CASE HAS BEEN STAINED; BASE LINED FULLY & TOP PADDED WITH STRIPS OF DARK BROWN & BLACK CORK

Decoration

N/A