General Information

Serial #

1689B

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

.1 METAL AND SYNTHTETIC/.2 CARDSTOCK

Dimensions

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

Length

43.5 cm

Width

26.0 cm

Height

27.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Photography

Category

Still processing

Sub-Category

N/A

Manufacturer

AKA

MACBETH

Country

United States of America

State/Province

New York

City

Newburgh

Context

Country

Canada

State/Province

Quebec

Period

THIS MACHINE USED TINT HE LATE 1960S. TECHNOLOGY REPRESENTED BY THIS DEVICE WAS AVAILABLE - 1930S TO C 1970

Canada

THIS MACHINE WAS USED BY DONOR IN HIS MEDICAL PRACTICE IN MONTREAL IN DIAGNOSING BREAST CANCER IN HIS PATIENTS BY USE OF X-RAY MAMMOGRAMS. [REF 1]

Function

USED TO MEASURE THE OPTICAL DENSITY OF PHOTOGRAPHIC NEGATIVES. THIS MACHINE WAS IN DIAGNOSING BREAST CANCER BY USE OF X-RAY MAMMOGRAMS. [REF 1]

Technical

X-RAYS ARE USEFUL BECAUSE TISSUE & BONES OF DIFFERENT DENSITIES APPEAR ON PHOTOGRAPHIC NEGATIVES IN THIS MANNER. DENSITOMETERS ARE USED TO DETECT SUBTLE DIFFERENCES WHICH THE EYE MIGHT NOT BE ABLE TO DISCERN.THE TECH REPRESENTED IN THIS DEVICE WAS AVAILABLE FROM THELATE 1930S TO C 1970 WHEN IT WAS REPLACED BY CHIP TECH.

Area Notes

Unknown

Details

Markings

.1 MFG'S PLATE: 'MODEL NO/ TD 500/ WATTS/ 60/ SERIAL NO./ 1689B/ VOLTS/ 115/ CYCLES/ 50/60/ MANUFACTURED BY/ MACBETH CORPORATION/ DIVISION OF KOLLMORGEN CORP./ NEWBURGH, NEW YORK U.S.A.'/ ON SCALE FACE: 'DIFFUSE DENSITY SOLID STATE MACBETH DENSITOMETER/ [SCALE 0 TO 1.5 % 0 TO 3]'/ FRONT PLATE: 'Macbeth/ TD 500'/ AROUND DIALS: 'OFF/ 0-3/ 0-1.5/ ZERO ADJUST'/.2 PRINTING INCLUDES: 'T.M. NC ANOTHER/ MACBETH/ DENSITOMETER'

Missing

APPEARS COMPLETE

Finish

.1 BLUE TEXTURED CASE WITH GREY MIDDLE PLATE AND TWO FRONT PLATES; CHORMED PLATE AROUND BLACK KNOBS; WHITE DIAL PLATE WITH BLACK SCALE/.2 BROWN CARTON WITH BLUE PRINTING

Decoration

.1 HORIZONTAL RIDGES ON PLATE AROUND SCALE AND ON BOTTOM PLATE