Details
Original Manual. STILL IN ORIGINAL WRAPPING!!
From Heathkit, for the model IO-4225 dual trace oscilloscope.
Features: parts list, step-by-step assembly, wiring, mounting, tests & adjustments, transmitter assembly, installation, troubleshooting chart, specifications, circuit description, circuit board voltage charts, x-ray views, and a pull out illustration booklet containing a schematic and many pictorials and diagrams.
Manual is in perfect new condition.
