General Information

Serial #

107699

Part Number

1

Total Parts

6

AKA

N/A

Patents

N/A

General Description

METAL BASE & BODY, FOCUS KNOBS BRASS, STAGE CLIPS METAL, STAGE GLASS IN METAL FRAME

Dimensions

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

Length

13.5 cm

Width

10.7 cm

Height

13.5 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

C.1880-1909 (REF.1 & 2)

Canada

USED BY DR. JAMES FLETCHER, CANADA'S FIRST ENTOMOLOGIST & BOTANIST IN 1876.

Function

USED TO OBSERVE MINUTE DETAIL IN BIOLOGICAL SPECIMENS DURING DISSECTING/.6 BLK & WHITE METAL PLATE WAS USED AS AN OPAQUE BACKGROUND. IT SLID INTO GROOVE BENEATH THE GLASS STAGE/.2 APLANATIC LENS WAS A LENS DESIGNED TO CORRECT FOR SPHERICAL ABERRATION

Technical

LENS ARM WAS JOINTED SO THAT ENTIRE FIELD OF THE STAGE COULD BE COVERED

Area Notes

Unknown

Details

Markings

ETCHED ON SURFACE OF STAGE, CO. LOGO 'BAUSCH & LOMB OPTICAL CO. ROCHESTER N.Y./ 107699/ B-L/ Z-S'. ETCHED NEXT TO THIS 'THE TOPLEY COMPANY/ OTTAWA CANADA'

Missing

2 LENSES, CASE MISSING HANDLE From CA of 11/16/2001 by David Daley: Yes - empty lens mount suggests lost lens

Finish

METAL PAINTED BLACK, FOCUS KNOBS BRASS PAINTED BLACK

Decoration

N/A