The Tester,pyrometer and Thermocoupl, cataloged under National Stock Number 6685-00-692-4591, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-692-4591 |
| Item Name | Tester,pyrometer and Thermocoupl |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| FSC Application Data | GENERAL PURPOSE USE |
| Scale Accuracy | 0.5 MILLIVOLT ACCURACY |
| Indicating Point Type | SINGLE |
| Scale Calibration | CALIBRATED TO IRON CONSTANTAN |
| Scale Smallest Increment | 6.0 VOLT AND 3.0 VOLT |
| Measurement Type | MILLIVOLT CIRCUIT |
| Scale Range | +11.250 TO 38.500 MILLIVOLTS |
| Scale Type | CONCENTRIC DIAL |
| Case Type | FUNGUSPROOF W/HINGED LID |
| Material | ALUMINUM CASE |
| Installation Design | PORTABLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| T7449TYPEN3 | 2/2 Government specification standardization U.S. Government activity |
NSN 6685-00-692-4591 is a Tester,pyrometer and Thermocoupl, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-00-692-4591: Overall Height: 6.000 INCHES NOMINAL IN; FSC Application Data: GENERAL PURPOSE USE; Scale Accuracy: 0.5 MILLIVOLT ACCURACY; Indicating Point Type: SINGLE. 11 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.