General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Cellulose nitrate slide rule

Dimensions

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

Length

23.5 cm

Width

22.2 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Mathematics

Category

Calculating devices

Sub-Category

N/A

Manufacturer

AKA

Abbot

Country

England

State/Province

Unknown

City

Beaminster

Context

Country

Canada

State/Province

Quebec

Period

PROBABLY USED FROM THE 1960S

Canada

PURCHASED BY DONOR FOR USE IN MONTREAL

Function

USED TO ASSIST USERS OF GAMMA-RAY SOURCES BY PROVIDING A READY MEANS OF CALCULATING RADIATION DOSE RATES FOR THE OBSERVANCE OF SAFETY STANDARDS. RELATES SOURCE STRENGTH WITH SOURCE DISTANCE TO DOSE RATE WITH LEAD THICKNESS.

Technical

THE ABILITY TO RAPIDLY CALCULATE RADIATION DOSAGE RATES IMPROVES THE MONITORING OF LEVELS AND THUS THE SAFETT IF THOSE WHO WORK WITH OR NEAR THE SOURCES OF THE RADIATION. [REF 2]

Area Notes

Unknown

Details

Markings

PRINTING ON ARTIFACT INCLUDES: 'U.K.A.E.A. COPYRIGHT RESERVED/ Isotope Handling Calculator MK.III/ FOR GAMMA-RAY SOURCES AND LEAD SHIELDING/ Align:/ Source Strength with/ Source Distance/ Dose-Rate with/ Lead Thickness/ U.K.A.E.A/ THE RADIOCHEMICAL CENTRE/ ABBOT BROWN BEAMINSTER/.../ THE CALCULATOR RELATES THE FOLLOWING FACTORS FOR THE/ ISOTOPES Na24, CO60, RADIUM, Cs137, Ir192, I131 AND Au198./ GAMMA-RAY DOSE-RATE--OUTERMOST SCALE/ DISTANCE FROM THE SOURCE--2ND SCALE/ SOURCE STRENGTH--3RD SCALE/ LEAD THICKNESS--THE INNERMOST SET OF SCALES,ONE SCALE FOR EACH ISOTOPE/...THIS CALCULATOR IS ISSUED BY THE RADIOCHEMICAL/ CENTRE, AMERSHAM, ENGLAND/ IT IS MORE FULLY DESCRIBED/ IN U.K.E.A./ REPORT RCC-R165'

Missing

COMPLETE

Finish

WHITE WITH BLUE PRINTING

Decoration

BRITISH GOVT.LION SYMBOL DRAWN IN CENTRE