Eico Model 1120 Capacitor Substitution Box - Used

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This used capacitor substitution box will ship insured and inspected from Rapid City, SD. In good condition, this unit sports some residue and etching on the top, a label and colored marker on the front, and scratches on the sides.

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The Eico Model 1120 Capacitor Substitution Box is a handy bench tool that lets you quickly swap in capacitors during circuit troubleshooting or experimentation. It supports values from 0.0001 µF up to 0.22 µF via a rotary switch, making it ideal for matching or testing capacitor ranges in vintage and modern electronics.

Measuring approximately 3.75” × 6.5” × 3.5”, it’s housed in a sturdy bakelite casing for durability. With its ±5% tolerance, it’s well suited for both repair work and experimental applications. Whether you’re restoring vintage gear or designing new circuits, this modular substitution box gives you flexibility and precision in capacitor selection.

Features / Specs

• Included: Positive and negative clamps
• Tolerance: ±5%
• Supports: 0.0001 µF up to 0.22 µF