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1. Vintage Heathkit Assembly Manual IO-4225 25MHz Dual-Trace Oscilloscope 1985

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2. Vintage Heathkit Laboratory 5" Oscilloscope Model I0-12 Assembly Manual

   T his item is in used condition.

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3. Vintage Heathkit Assembly Manual O-11 Laboratory Oscilloscope Original 1956

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4. Heathkit IO-4555 Operation Manual 10 Mhz Oscilloscope Singletrace Guide ORIGINAL

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5. Heathkit O-12 Laboratory Oscilloscope

   Tested working and is guaranteed functional. The horizontal selector has no stopping point. Cosmetically in fair condition showing moderate to heavier scuffs / scratches / blemishes from previous use. Includes Oscilloscope as pictured. No additional items or accessories are included. Photos are of the actual unit for sale. Inventory is on hand and ready to ship. Please feel free to message us with any questions you may have.

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6. Heathkit Assembly & Operating Manuals for 10MHz Oscilloscope Model IO4530

   Genuine Heathkit manuals for 10 MHz oscilloscope model IO-4530 complete with illustrations and full schematic diagram and both in excellent condition. Both manuals are included in this listing, Item will be shipped second class via Royal Mail thank you. HK03

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7. Heathkit Oscilloscope Model OM-3 Assembly & User Manual, with Schematics, (X)

   ORIGINAL PRINTING! Booklet is in PRE-OWNED condition. Cover has wear. Spine is intact and tight. No missing pages. Previous owner used a red pencil on the schematics drawing. No other writing.

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8. Vintage Heathkit Assembly Manual OM-1 Oscilloscope Original 1956

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