The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-01-531-7294, 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 22 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-531-7294 |
| Item Name | Gage,compound Pressure-Vacuum,di |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Accuracy | +/- 1.0 PERCENT |
| Scale Name | PRESSURE-VACUUM |
| Overall Diameter | 5.875 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Pointer Marking | SLOTTED |
| Scale Inscription/background Color | WHITE BACKGROUND WITH BLACK NUMERALS AND GRADUATIONS |
| Scale Smallest Increment | 10.0 INCHES OF MERCURY (INHG) AND 5.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 30.0 INCHES HG AND +0.0 TO 300.0 POUNDS PER SQUARE INCH LBS |
| Mounting Hole Diameter | 0.250 INCHES NOMINAL IN |
| Scale Name for Which Pointer Is Designed | PRESSURE-VACUUM |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | DIAL |
| Dial Size | 4.5" |
| Connection Location | BACK |
| Pointer Color | RED |
| Surface Treatment | ENAMEL CASE |
| Material | ALUMINUM CASE |
| Connection Quantity | 1 |
| Connection Size | 0.250 IN. NPT MALE IN |
| 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 |
|---|---|
| EA24-3CG4-LWBX | 5/1 Secondary reference Weksler Glass Thermometer Corp |
| SA24-3CG4-LWBX | 5/9 Secondary reference Weksler Glass Thermometer Corp |
| SC4NN3HCWRONAG | 5/9 Secondary reference U.S. Government activity |
| MIL-G-18997E | 4/1 Identification reference U.S. Government activity |
| SC4NN3HCWPONA | 2/2 Government specification standardization U.S. Government activity |
NSN 6685-01-531-7294 is a Gage,compound Pressure-Vacuum,di, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-531-7294: Mounting Hole Quantity: 3; Scale Accuracy: +/- 1.0 PERCENT; Scale Name: PRESSURE-VACUUM; Overall Diameter: 5.875 INCHES NOMINAL IN. 22 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.