| | Manufacturer | Part No | Description | Available | Price |
| Buy | Heath Company | 595-1920-01 | SM-4110: 110 MHz Frequency/Period Meter Operation/Service Manual. 1977. (109140) | 1 | $20.00 |
| Buy | Heath Company | 595-1920-01 | SM-4110: 110MHz Frequency/Period Meter Operation/Service Manual. 1977 (109142) | 1 | $20.00 |
| Buy | Heath Company | 595-2431 | SM-2410: Frequency Counter Operation/Service Manual. 1980. (109144) | 4 | $15.00 |
| Buy | Heath Company | 595-251 | PM-2: Mobile Tuning Meter Heathkit Assembly Manual. 12-19-69. (109136) | 2 | $15.00 |
| Buy | Heath Company | 595-507 | IN-21: Decade Capacitance Kit Heathkit Assembly Manual. 11/13/61. (109129) | 1 | $15.00 |
| Buy | Heath Company | 595-574 | IM-12: Harmonic Distrotion Meter Heathkit Assembly Manual. 10/23/64. (109127) | 1 | $15.00 |
| Buy | Heath Company | 595-90 | V-7: Vacuum Tube Voltmeter Assembly and Usage. 1954. (109138) | 1 | $15.00 |
| Buy | Heath Company | 595-980 | GD-97 Model GD-97 Utility Transmitter Heathkit Assembly Manual (201909) | 1 | $25.00 |