The Tachometer,mechanical,fixed Moun, cataloged under National Stock Number 6680-01-491-4823, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6680-01-491-4823 |
| Item Name | Tachometer,mechanical,fixed Moun |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Status | ACTIVE |
| Scale Quantity | 1 |
| Drive Connection Type | THREADED |
| Dial Quantity | 1 |
| Scale Measurement Unit | REVOLUTIONS PER MINUTE |
| Pointer Quantity | 1 |
| Pointer Movement Direction | CLOCKWISE |
| Mounting Feature Type | SURFACE |
| Case Shape | SQUARE |
| Scale Measurement Range | +300.0 TO 3500.0 |
| Mounting Type | PANEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| D1-112-5025 | 3/9 Design control — primary reference Mitchell Aircraft Products Inc |
| D1-112-5025 | 5/9 Secondary reference Daher Aerospace - Ex Socata |
NSN 6680-01-491-4823 is a Tachometer,mechanical,fixed Moun, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
Key specifications for 6680-01-491-4823: Scale Quantity: 1; Overall Height: 3.250 INCHES NOMINAL IN; Drive Connection Type: THREADED; Overall Width: 3.250 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.