Tektronix Circuit Computer

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Country of manufacture: USA,            Date of manufacture: abt. 1961
Diameter: 19.8 cm,      Weight: approx. 37.6 gms
Materials: All plastic
Cursor: all plastic, one sided; one line.
Scales: specialized
Front:
     Outer Disk: L Scale, F_L Scale, τ_L Scale
     Middle Disk: C Scale
     Inner Disk: R Scale, F_C Scale
Back: Calculation formulae and definitions of terms.
Condition: C0 (Mint with all accessories)
Came with: Original instruction booklet

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