General Information

Serial #

1081-1-3

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

GLASS OPTICS; ALL METALCASING.

Dimensions

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

Length

30.0 cm

Width

24.0 cm

Height

27.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Light & electromagnetic radiation

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

THIS GRATING PRESUMABLY USED C. 1960S TO EARLY 1988.

Canada

USED IN THE NATIONAL RESEARCH COUNCIL'S SPECTROSCOPY LABORATORIES, WHOSE HIGH STANDARDS AND GROUND BREAKING RESEARCH HELPED TO ESTABLISH NRC'S INTERNATIONAL REPUTATION IN THIS FIELD.

Function

USED WITH SPECTROMETER TO SEPARATE LIGHT INTO CHARACTERISTIC WAVELENGTHS FOR PURPOSES OF OBSERVATION AND ANALYSIS.

Technical

INSTALLED IN 6.5 METER AIR SPECTROMETER (930329) AUG. 31, 1967. THIS GRATING IS FUSED QUARTZ, RULED WITH 1200 GROOVES PER MM, AND HAS A CONCAVE RADIUS.

Area Notes

Unknown

Details

Markings

Tape label on casing top bears handwritten notation " 30,000 l/in ". "1081 Fused Silica" and "[689 ?] 35-52 (?) 9.00 [right facing arrow] 1081 A/ B" handwriten in pencil on edge of grating". Green label on grating back reads " BAUSCH & LOMB INCORPORATED/ ROCHESTER, NEW YORK, U.S.A./ [logo] Certified Precision Grating/ 35-52-77-74/ CATALOGUE NO./ 1081-1-3/ SERIAL NO./ 1200/ GROOVES/mm / 19 [degrees] 16'/ BLAZE ANGLE/ 6650 mm/ CONCAVE RADIUS/ BLAZE [right facing arrow]. "

Missing

NONE. From CA of 04/11/2000 by Myles Bailey: Yes - missing one small screw.

Finish

CASING HAS FLAT BLACK FINSIH APPLIED TO ALL EXTERIOR SURFACES.

Decoration

N/A