The Gage,differential,dial Indicatin, cataloged under National Stock Number 6685-01-138-6970, 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 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-138-6970 |
| Item Name | Gage,differential,dial Indicatin |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Scale Accuracy | 2 PCT FULL SCALE (ON INCREASING DIAL READINGS) |
| Scale Name | DIFFERENTIAL PRESSURE |
| Actuation Type | PISTON |
| Scale Inscription/background Color | THE DIAL SHALL BE MARKED WITH A YELLOW ARC IN THE 100-150 PSID AREA |
| Scale Smallest Increment | 30.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Scale Range | +0.0 TO 150.0 POUNDS PER SQUARE INCH LBS |
| Scale Type | DIAL |
| Graduation Unit | 30.0 POUNDS PER SQUARE INCH LBS |
| Material | STEEL CORROSION RESISTING ACTUATING ELEMENT |
| 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 |
|---|---|
| 13221E8316-1 | 3/2 Design control — primary reference U.S. Government activity |
| 1201PG-1C-3.5 0-150 PSID | 5/9 Secondary reference Orange Research Inc |
NSN 6685-01-138-6970 is a Gage,differential,dial Indicatin, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-138-6970: Scale Accuracy: 2 PCT FULL SCALE (ON INCREASING DIAL READINGS); Scale Name: DIFFERENTIAL PRESSURE; Actuation Type: PISTON; Scale Inscription/background Color: THE DIAL SHALL BE MARKED WITH A YELLOW ARC IN THE 100-150 PSID AREA. 9 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.