American Gas Journal High Pressure Gas Flow Computer

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Country of manufacture: USA,            Date of manufacture: ____
Diameter: 12.6 cm diameter disk mounted on 15.8 X 19.1 cm square back.
Materials: Heavy, coated cardstock
Cursor: One, heavy coated cardstock, scales.
Scales on Backplane: Cubic Feet of Gas per Hour, Length of Pipe (Feet or Miles)
Scales on Cursor: Specific Gravity, Sum of Absolute Pressures (lbs per sq inch)
Scales on Disk: Diameter of Pipe in Inches, Difference in Absolute Pressures (lbs per sq inch)
Back: blank
Condition: C0 (Mint condition with all accessories
Came with: Original red plastic folder with instruction sheet

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