The Psychrometer, cataloged under National Stock Number 6685-00-892-1643, 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 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6685-00-892-1643 |
| Item Name | Psychrometer |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Engraved Thermometer Stem | INCLUDED |
| Mounting Panel Tables | NOT PROVIDED |
| Sling Handle | NOT INCLUDED |
| Fan Motor Current Type | DC |
| Mounting Method | BACKPLATE THERMOMETER |
| Circulation Method | FAN |
| Calibration Accuracy Rating | PORM 0.3 FOR 0 DEG AND ABOVE |
| Accessory Components and Quantity | ILLUMINATION LAMPS 2; THERMOMETERS 2; WICKING 1 |
| Graduation Interval | 10.0 DEG |
| Color | RED, LIGHT |
| Operating Temp Range | +35.0 TO 150.0 FAHRENHEIT DEGF |
| Thermometer Quantity | 2 |
| Mounting Shelter | NOT INCLUDED |
| Magnifying Lens | NOT INCLUDED |
| Material | PLASTIC CISTERN |
| Material | STEEL CORROSION RESISTING THERMOMETER MOUNTING |
| Circulation Type | FORCED |
| Voltage Rating | 4.500 VOLTS NOMINAL |
| Thermometer Filling Type | SPIRIT |
| 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 |
|---|---|
| GGP725TYPE3 | 2/2 Government specification standardization U.S. Government activity |
NSN 6685-00-892-1643 is a Psychrometer, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-00-892-1643: Engraved Thermometer Stem: INCLUDED; Overall Height: 2.000 INCHES NOMINAL IN; Mounting Panel Tables: NOT PROVIDED; Sling Handle: NOT INCLUDED. 19 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.