| Brand | HP |
|---|---|
| Type | DC panel meter |
| Compatible Brand | Universal, Modutek |
| MPN | 1.0 Ma, 1120-0539 |
| Country of Origin | United States |
Check the listing for details. HP 8640 8640A 8640B DC 1.0 Milliampere Panel Meter Compact Size, Modern Tested. Condition: Used, Made in United States. Listed at 16.95 USD. Removed from an HP 8640B RF signal generator. Removed from an HP 8640B frequency generator. You can either glue it in place, or use a rear retainer bracket, which is what HP did. Plus add a small hole for the zero adjust.