The Manometer,u-Tube, cataloged under National Stock Number 6685-00-616-0697, 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 16 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6685-00-616-0697 |
| Item Name | Manometer,u-Tube |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Zero Adjuster | PROVIDED |
| Indicator Type | ONE LIQUID |
| Equalizing Valve | NOT PROVIDED |
| Scale Smallest Increment | 0.1 INCHES IN |
| Receptacle Type | EXPANSION CHAMBER |
| Indicating Liquid | PROVIDED |
| Connection Type | THREADED |
| Scale Range | +0.0 TO 50.0 INCHES IN |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Connection Facility Type | INTERNAL |
| Connection Location | UPPER BACK |
| Parallax Eliminating Feature | NOT PROVIDED |
| Control Valve | NOT PROVIDED |
| Mounting Provision for Which Designed | SURFACE PANEL |
| Thread Size and Series/type Designator | 0.250 NPT |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY PAC ELRN |
| 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 |
|---|---|
| GS3142-19 | 7/1 Vendor item drawing reference Hamilton Sundstrand Corporation Dba Collins Aerospace |
| 10AA25WM50.SS303 SCALE A FLUID | 3/1 Design control — primary reference Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument |
| BUSWM50SS303U1 | 5/9 Secondary reference King Engineering Corporation Dba King-Gage Systems |
| HSSCDGS3142-19 | 7/2 Vendor item drawing reference Hamilton Sundstrand Corporation Dba Collins Aerospace |
| 10AA25WM50SCALEA | 7/1 Vendor item drawing reference Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument |
NSN 6685-00-616-0697 is a Manometer,u-Tube, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-00-616-0697: Zero Adjuster: PROVIDED; Indicator Type: ONE LIQUID; Equalizing Valve: NOT PROVIDED; Scale Smallest Increment: 0.1 INCHES IN. 16 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.