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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
810
Blundell Harling Ltd.
England
Plastic
est. 1950's & 1960's
5.1 cm x 33 cm
Time and Distance
Notes:
"Used to calculate time and distance problems in hours, minutes, seconds, days, knots and latitude"
Image 1
Image 2
Image 3
