General Information

Serial #

N/A

Part Number

1

Total Parts

24

AKA

N/A

Patents

N/A

General Description

BRASS, GLASS, METAL/ PT. CASE, WOOD, BRASS HINGES & LOCK VELVET ON INTERIOR LID.

Dimensions

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

Length

25.5 cm

Width

6.5 cm

Height

6.5 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

Unknown

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

Unknown

State/Province

Unknown

Period

C.1840'S (REF.1)

Canada

ALTHOUGH ACQUIRED FROM NRC, THE INSTRUMENT LONG PREDATES THE CREATION OF NRC. IT IS POSSIBLE THAT A STAFF MEMBER HAD ACQUIRED IT FOR THEIR OWN USE OR AMUSEMENT AND LEFT IT BEHIND IN THEIR OFFICE WHEN THE LEFT NRC.

Function

USED TO OBSERVE BIOLOGICAL SPECIMENS IN DETAIL. SUCH INSTRUMENTS WERE OFTEN USED IN THE FIELD BECAUSE OF THEIR COMPACT SIZE AND EASE OF USE.

Technical

AN EXAMPLE OF A DRUM TYPE MICROSCOPE. THIS CYLINDRICAL STYLE WAS CHARACTERIZED BY THE DRUM-SHAPED SECTION BELOW THE STAGE. THIS AREA HAD A CUT AWAY SECTION TO ADMIT LIGHT AND IN LATER MODELS INCORPORATED A SUBSTAGE MIRROR. (REF.1)

Area Notes

Unknown

Details

Markings

.1 5 LINES ARE ETCHED AROUND SURFACE OF INNER TUBE & NUMBERED 2-6/ ETCHED ON OBJECTIVE MOUNTED ON MICROSCOPE '2'.

Missing

NONE/ PT. CASE MISSING PLATES RECESSED IN TOP OF LID & LOCK

Finish

LACQUERED BRASS, PIN TO MOUNT FOCUS KNOB SILVER- COLOURED METAL/ PT CASE, WOOD STAINED BROWN, VELVET INTERIOR, BLUE

Decoration

TOP OF EYEPIECE PAINTED GREY