Heathkit io 21 manual

This Heathkit IO-21 complete with manual test leads and low capacity probe. This unit is in excellent working condition as you can see from the photos it isHEATHKIT IO21 OSCILLOSCOPE SCH. METER - SERVICE MANUAL. Type: (PDF). Size 152.1 KB. Page 2. Category METER SERVICE MANUAL. If you get stuck in repairing a Oscilloscope IO-21 Equipment Heathkit Brand, Heath Co.; Benton Harbor MI, Click on the schematic thumbnail to request the schematic as a free document. View and Download Heathkit IO-4205 manual online. 5 Megahertz Dual Trace Oscilloscope. IO-4205 test equipment pdf manual download. Figure 4: Heathkit IO-21 Rear Panel. Page 5. HOM rev. new. Heath of the Month #096 - IO-21 Oscilloscope manual it states they are essentially identi- cal. After