Archive
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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
315 Descal Circular Calculator
Blundell Harling Ltd.
England
Plastic
est. 1950's & 1960's
19.7 cm
Engineering Calculations
Notes:
1) A well made precision disk in disk slide rule 2) One sided design 3) Interesting spiral LL scale
Image 1
Image 2
Image 3
Image 4
Image 5
Image 6
