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Heathkit IO-103

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eBay

Circuit Diagrams for Heathkit IO-103 $7 Jan 11, 2026

eBay

Heathkit Assembly Manual IO-103 5-INCH Triggered Sweep Oscilloscope $19 Dec 18, 2025

eBay

Hitachi CRT Round Cathode Ray Tube from Heathkit IO-103 Oscilloscope $79 Feb 20, 2025

eBay

Original Heathkit IO-103 5-Inch Triggered Sweep Oscilloscope Assembly Manual VTG $14 Nov 27, 2024

eBay

Heathkit IO-103 5" Triggered Sweep Oscilloscope Manual $23 Dec 21, 2021

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