General Information

Serial #

N/A

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

SYNTHETIC/ PAPER

Dimensions

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

Length

20.0 cm

Width

16.5 cm

Height

2.0 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

REED

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

North America

State/Province

Unknown

Period

PROBABLY WOULD HAVE BEEN USED IN THE 1980'S. THIS ONE NEVER USED.

Canada

EXAMPLE OF DEVICE USED FOR PLOTTING COMET PATHS AVAILABLE FOR USE IN CANADA.

Function

USED TO PROVIDE A GRAPHICAL METHOD FOR PLOTTING COMETS. IT ALLOWS THE USER TO VISUALIZE IN 3-D THE ORBIT OF ANY LONG-PERIOD COMET, GIVEN THE APPROPRIATE ORBITAL ELEMENTS. THE RELATIVE POSITIONS OF THE COMET, SUN & EARTH CAN BE DETERMINED FOR A GIVEN DAY IF AN EPHEMERIS IS AVAILABLE [SEE MANUAL].

Technical

A GRAPHICAL MEANS TO PREDICT COMET ORBITS FOR AMATEURASTRONOMERS BEFORE THE DEVELOPMENT OF HOME COMPUTERS.

Area Notes

Unknown

Details

Markings

.1 ALONG TOP OF DEVICE: 'THE REED COMET CALCULATOR'/ VARIOUS SCALES AND CALCULATION MARKINGS ON PLATES [SEE MANUAL FOR EXPLANATION]/ ON BOTTOM: 'PAT. PEND.'/.2 TWO ARROWS/ HANDWRITTEN ON PACKAGE: 'This to (7/8/76)/ Don Darling/ Comet/ Calculator'/ STAMPED ON PACKAGE: 'SMALL PACKAGE'

Missing

APPEARS COMPLETE

Finish

CLEAR 'PLASTIC' WITH RED, BLACK, BLUE & GOLD PRINTING

Decoration

N/A