General Information

Serial #

1124

Part Number

1

Total Parts

3

AKA

N/A

Patents

N/A

General Description

METAL, SYNTHETIC AND (PRESUMABLY) GLASS COMPONENT PARTS/ PT CASE IS SYNTHETIC, WITH FOAM PACKING & METAL EDGES & CLASPS

Dimensions

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

Length

29.5 cm

Width

25.0 cm

Height

29.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Exploration and Survey

Category

Measurement-distance

Sub-Category

N/A

Manufacturer

AKA

AGA

Country

United States of America

State/Province

New Jersey

City

Secaucus

Context

Country

Canada

State/Province

Unknown

Period

THIS TYPE OF GEODIMETER USED C.1973 TO PRESENT. THIS UNIT USED C.1973-1990.

Canada

TYPE NASM-2 GEODIMETER FIRST USED BY GEODETIC SURVEY OF CANADA IN SUMMER 1956. VARIOUS MODELS USED BY GSC UP TO PRESENT.

Function

TO MEASURE HORIZONTAL DISTANCES BY TIMING THE PASSAGE OF A PULSE OF LIGHT FROM THE INSTRUMENT TO A REFLECTOR AND BACK TO GEODIMETER

Technical

GEODIMETER WAS FIRST ELECTRO-OPTICAL DISTANCE MEASURING DEVICE, PERMITTING DIRECT DISTANCE MEASUREMENT OF HIGH ACCURACY, SUBJECT TO METEOROLOGICAL CONDITIONS. INTRODUCED IN 1953 THE FIRST UNITS WEIGHED OVER 220 LBS., COULD BE USED ONLY AT NIGHT & MEASURED DISTANCES 20-25 MILES, ACCURATE TO APPROX. 1 PART PER MILLION. MODEL 76 IS ALL PURPOSE DISTANCE MEASURING INST. USING HELIUM-NEON LASER SOURCE & MEASURING IN FEET OR METERS, THE DISTANCE DIGITALLY DISPLAYED. ACCURACY UNAFFECTED BY BEAM INTERRUPTIONS. ATMOS. CORRECTION CALCULATOR.

Area Notes

Unknown

Details

Markings

PLATE ON BACK READS: 'AGA CORPORATION/ SECAUCUS, N.J./ SERIAL NO. 1124'; FUSE RECEPTACLE LABELLED. '1124' INCISED IN BASE/ FRONT READS: 'AGA/ Geodimeter [REG. TRADEMARK SYMBOL]/ Model 76'; ALL CONTROLS LABELLED

Missing

ATMOSPHERIC CORRECTION CALCULATOR REQUIRES BATTERY & TRIPOD IN ORDER TO BE OPERABLE. REFLECTOR .2 IS SMALL FORMAT

Finish

GEODIMETER HAS WRINKLE-TEXTURED ORANGE & BLACK CASING; SILVER METAL BASE/ PT CASE IS BRIGHT ORANGE, WITH BLACK CARRYING HANDLE AND SILVER METAL CLASPS & EDGING.

Decoration

N/A