Emeloid Company, Inc. Smith Chart Radio Transmission Line Calculator

Country of manufacture: USA,            Date of manufacture: ____
Diameter: 23 cm (9 inches)
Materials: All plastic
Cursor: All plastic; lines = Voltage/Current limits or ratios; Attenuation/Dissipation/Reflection
Outer Ring: Wavelengths toward transmitter or antenna
Body: Positive and negative impedance components
Gauge Marks: [π, e ]
Condition: C2 (Mint but no case)
Came with: nothing