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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
Horizontal and Directional Drilling Calculator
American Slide Chart Co. for Ryan Energy Technologies Inc.
USA
Cardstock & Plastic
c. 1996
10.2 cm x 23.5 cm
Well Drilling Industry
Notes:
Used to calculate angles for directional drilling operations - often used in the oil well drilling industry
Image 1
Image 2
