| Collection | ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments |
| Object Name | Electrometer tube |
| Object Number | ABDNP:203278a |
| Other Number | TE 1499 |
| Other Number Type | Temporary number |
| Brief Description | Osram Electrometer, type: ET1. Handwritten number on the inside of the glass "477". Small glass tube with filament. 4-pin base and top cap. For picovolt measurement. Complete with original box and suspended carrier. |
| Dimensions | L: 220, W: 40, D: 40 mm |
| Materials | glass, wire, plastic, metal |
| Condition | Fair |
| Completeness | complete |
| Maker | Osram |
| Object Production Place | England |
| Object Production Date | 1940-1950 |