The Barometer,digital Display, cataloged under National Stock Number 6685-01-520-8616, 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 3 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-520-8616 |
| Item Name | Barometer,digital Display |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Supplementary Features | ISO 17025 CERTIFICATE INDICATES INSTRUMENT TRACEABILITY TO STANDARDS PROVIDED BY NIST; SUPPLIED W/LAB-BENCH STAND, WALL MOUNT, AND 4 "AA" BATTERIES; MEASURES 1L X51/4WX71/4 IN.H IN |
| Scale Range | +23.4 TO 31.0 INCHES HG IN |
| Environmental Attribute Code | BAROMETERS & HYGROMETERS - CONSUMER PRODUCTS - NON-MERCURY ALTERNATIVE |
| 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 |
|---|---|
| 02-400 | 3/9 Design control — primary reference Fisher Scientific Company L.l.c. |
| 6630NCM991079 | 5/1 Secondary reference Defense Medical Standardization Board |
| TRACEABLE DIGITAL BAROMETER | 5/9 Secondary reference Fisher Scientific Company L.l.c. |
| 04-0680 | 5/1 Secondary reference U.S. Government activity |
NSN 6685-01-520-8616 is a Barometer,digital Display, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-668-0509, 3020-01-724-0913. Verify interchangeability with system specifications before substitution.
Key specifications for 6685-01-520-8616: Supplementary Features: ISO 17025 CERTIFICATE INDICATES INSTRUMENT TRACEABILITY TO STANDARDS PROVIDED BY NIST; SUPPLIED W/LAB-BENCH STAND, WALL MOUNT, AND 4 "AA" BATTERIES; MEASURES 1L X51/4WX71/4 IN.H IN; Scale Range: +23.4 TO 31.0 INCHES HG IN; Special Features: COMBINATION UNIT SIMULTANEOUSLY DISPLAYS CURRENT BAROMETRIC PRESSURE, BAR GRAPH OF BAROMETRIC TRENDS, HUMIDITY, TEMPERATURE, AND DATE OR TIME; SWITCHES PERMIT SETTING IN DEG FARENHEIT OR CELSIUS AND IN HG OR MBAR; IDEAL FOR RECORDING AMBIENT CONDITIONS IN LABS; ELECTRONIC DIGITAL BAROMETER MEASURES ATMOSPHERIC PRESSURE FROM 23.45 TO 31.01 IN.HG WITH RESOLUTION OF 0.03 IN.HG OR FROM 794 TO 1050MBAR W/RESOLUTION OF 1MBAR; ACCURACY IS +OR-0.1477 IN.HG TO OR-5MBAR; MEMORY AUTOMATICALLY CAPTURES READING EVERY HOUR; DISPLAYS PAST 24 READINGS; ADJUSTABLE ALTITUDE COMPENSATION FROM 0 TO 2500M; THERMOMETER DISPLAYS FROM 23 DEG TO 131 DEG F WITH RESOLUTION OF0.9 DEG F; RELATIVE HUMIDITY METER SHOWS 10 TO 98% RELATIVE HUMIDITY WITH RESOLUTION OF 1% AND ACCURACY OF +OR- 5%; VISUAL INDICATOR DISPLAYS WEATHER FORECAST OF SUNNY, CLOUDY OR RAINY; CLOCK DISPLAYS TIME TO MINUTE IN EITHER AM/PM OR 24 HR MILITARY TIME IN; Environmental Attribute Code: BAROMETERS & HYGROMETERS - CONSUMER PRODUCTS - NON-MERCURY ALTERNATIVE. 3 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.