General Information

Serial #

157844

Part Number

1

Total Parts

5

AKA

N/A

Patents

N/A

General Description

METALS, INCLUDING ALUMINUM, STEEL & PROBABLY BRASS. GLASS OPTICS & LEVEL TUBES. METAL AND/OR SYNTHETIC FITTINGS, ETC./ .1PT CASE IS METAL WITH LEATHER CARRY STRAP.

Dimensions

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

Length

26.0 cm

Width

18.0 cm

Height

31.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Astronomy

Category

Observation equipment

Sub-Category

N/A

Manufacturer

AKA

KERN

Country

Switzerland

State/Province

Unknown

City

Aarau

Context

Country

Canada

State/Province

Unknown

Period

THIS TYPE OF INSTRUMENT USEDC.1959-1975.

Canada

THIS TRANSIT USED BY GEODETIC SURVEY OF CANADA TO CONDUCT FIRST ORDER TRIANGULATION SURVEYS ACROSS CANADA. IT WAS ALSO USED IN TRAVERSING & ASTRONOMICAL SURVEY OPERATIONS.

Function

USED IN FIRST & SECOND ORDER TRIANGULATION SURVEYS; IN CONTROL SURVEYS AND FOR TIME DEFORMATION MEASUREMENTS; AND TO DETERMINE AZIMUTH, POSITION & TIME IN ASTRONOMICAL SURVEYS.

Technical

DKM 3 WAS THE LARGEST & MOST PRECISE THEODOLITE MFD BY KERN IN LATER 1950S - EARLY 1960S. IT FEATURES A SHORT BARRELED MIRROR-LENS TELESCOPE WITH WIDE OBJECTIVE APERTURE, AND PROVIDES A REAL, UPRIGHT IMAGE (UNLIKE MOST INSTS., WHICH PRESENT AN INVERTED IMAGE). AUXILIARY TELESCOPE, WHICH USES OCCULAR OF MAIN TELESCOPE, IS ACTIVATED BY A SWITCHING LEVER, USED FOR FINDING SIGNALS & ANGLE MEASUREMENT IF SIGHTS ARE SHORT.

Area Notes

Unknown

Details

Markings

.1 'Kern/ AARAU/ SUISSE/ SWITZERLAND/ DKM3/ No 157844' INCISED & HIGHLIGHTED IN WHITE ON THEODOLITE/ .1-.4PT CASE: 'Kern/ SWISS/ SWISSE' CAST IN RAISED PRINT ON LATCHES SECURING LID TO BASE. DYMO LABEL ON LID READS: 'DKM 3 SER 157844'. MAILING LABEL ON CASE TOP READS: 'To/ GEODETIC SURVEY OF CANADA,/ 360 LEBRETON STREET, OTTAWA, ONT.'; HANDWRITTEN IN RED MARKER: 'ASTRO/ 85/11/28'. '157844' INCISED IN BASE OF CASE

Missing

NONE, HOWEVER ELECTRIC LIGHTING SET WITH BATTERY CASE & HAND LAMP WAS ADVERTISED AS STANDARD EQ. SUPPLIED WITH DKM 3.

Finish

THEODOLITE, TRIPOD HEAD & .1PT CASE ALL HAVE DRAB-GREEN ENAMEL FINISH./ .1 STANDARD BASE HAS WRINKLE FINISH./ .1PT HAS MOTTLED FINISH./ .1 THEODOLITE HAS BRUSHED ALUMINUM ADJUSTMENT KNOBS & FITTINGS, AND OBJECTIVE LENS HOUSING. SECURING PLATE INSIDE./ .1 CASE BASE ALSO HAS BRUSHED SILVER METAL FINISH./ .5PT CASE HAS UNFINISHED WOOD INTERIOR & EXTERIOR

Decoration

N/A