FXR Smith Chart & Slide Rule

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Country of manufacture: USA,            Date of manufacture: ____
Diameter: 23.2 cm,      Weight: 127.8 gms
Materials: All plastic
Cursor: one on front with single line and scale labels; another on back, enlargement shown below
Front: D [ C, CI, A, K, L, T, D, ST ]
Back: Smith Chart
Condition: C1 (Mint but folder is not in mint condition)
Came with: Cardboard folder which serves as a case for the rule and provides instructions for use

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