General Information

Serial #

N/A

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

METAL/ GLASS

Dimensions

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

Length

31.5 cm

Width

29.0 cm

Height

48.2 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Metrology

Category

Miscellaneous

Sub-Category

N/A

Manufacturer

AKA

TOEPFER

Country

German Democratic Republic

State/Province

Unknown

City

Potsdam

Context

Country

Canada

State/Province

Ontario

Period

C. 1905- C. 1960'S (MENTIONED IN CHIEF ASTRONOMER'S REPORT, 1907)

Canada

THE EARLY SPECTRASCOPIC STUDIES AT THE DOMINION OBSERVATORY RESULTED IN THE CREATION OF THE DOMINION ASTROPHYSICAL OBSERVATORY WHICH PUT CANADA AT THE FOREFRONT OF SUCH STUDIES/ MEASURING MACHINES WERE A KEY ELEMENT OF RESEARCH EQUIPMENT FOR THESE STUDIES

Function

FOR MEASURING STAR SPECTRA

Technical

DESIGNED SPECIFICALLY FOR SPECTRASCOPIC STUDIES; UTILIZED 18TH & 19TH CENTURY MICROMETERS; USED PRECISION SCREWS TO FACILITATE MEASUREMENT TAKING; TOEPFER (ALONG WITH ZEISS (700222)) WAS AMONG THE LEADING MANUFACTURERS OF ITS TIME - ARTIFACT A GOOD DISPLAY OF THE GERMAN WORKMANSHIP IN THAT PERIOD.

Area Notes

Unknown

Details

Markings

ENGRAVED 'Otto Toepfer & Sohn/ Potsdam'/ ON LENS 'BAUSCH & LOMB OPT. CO.'

Missing

From CA of 01/18/2002 by Matthew Bruce: No - appears complete

Finish

BASE IS PAINTED BLACK, REST IS PRIMARILY BRASS- OR DULLSILVER-COLOURED WITH SOME BLACK PTS

Decoration

N/A