| Manufacturer: | Heathkit |
| Model: | IO-3220 |
| Description: | Oscilloscope |
| Type: | Assembly Manual |
| Price: | $49 |
| Manufacturer: | Heathkit |
| Model: | IO-3220 |
| Description: | Oscilloscope |
| Type: | Operator Manual |
| Price: | $22 |
| Manufacturer: | Heathkit |
| Model: | IO-3220 |
| Description: | Oscilloscope |
| Type: | Product Info |
| Price: | $20 |