The Thermometer,hygro, cataloged under National Stock Number 6685-01-495-9776, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Extech Instruments Corporation Dba Extech Data Systems Div. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-495-9776 |
| Primary Part Number | RH300 |
| Item Name | Thermometer,hygro |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Extech Instruments Corporation Dba Extech Data Systems Div |
| Status | ACTIVE |
| General Characteristics Item Description | COMPACT HANDHELD HYGRO-THERMOMETER WITH LARGE DUAL LCD DISPLAYS TEMPERATURE AND HUMIDITY OR DEW POINT SIMULTANEOUSLY; DEW POINT MEASUREMENT CAN INDICATE IF CONDITIONS ARE SUITABLE FOR PAINTING; IDEAL FOR MANY INDUSTRIAL APPLICATIONS OR HOME USE |
| Functional Description | APPLICATIONS: WATER RESTORATION,FACTORIES,CLEAN ROOMS, OFFICES, STORAGE FACILITIES, GREENHOUSES, PAINTING, HVAC |
| Unpackaged Unit Weight | 264.0 GRAMS G |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RH300 PRIMARY | Extech Instruments Corporation Dba Extech Data Systems Div (USA) |
| Reference | Meaning |
|---|---|
| RH210 | 3/9 Design control — primary reference Extech Instruments Corporation Dba Extech Data Systems Div |
| 444731 | 5/9 Secondary reference Extech Instruments Corporation Dba Extech Data Systems Div |
NSN 6685-01-495-9776 is a Thermometer,hygro, manufactured by Extech Instruments Corporation Dba Extech Data Systems Div, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-495-9776 has 1 manufacturer part number on file: RH300 (Extech Instruments Corporation Dba Extech Data Systems Div).
Key specifications for RH300: Overall Height: 1.30 INCHES NOMINAL IN; General Characteristics Item Description: COMPACT HANDHELD HYGRO-THERMOMETER WITH LARGE DUAL LCD DISPLAYS TEMPERATURE AND HUMIDITY OR DEW POINT SIMULTANEOUSLY; DEW POINT MEASUREMENT CAN INDICATE IF CONDITIONS ARE SUITABLE FOR PAINTING; IDEAL FOR MANY INDUSTRIAL APPLICATIONS OR HOME USE; Overall Length: 5.30 INCHES NOMINAL IN; Overall Width: 2.40 INCHES NOMINAL IN. 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.