The Tachometer,mechanical,handheld, cataloged under National Stock Number 6680-00-490-3435, 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 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-00-490-3435 |
| Item Name | Tachometer,mechanical,handheld |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Status | ACTIVE |
| Scale Quantity | 2 |
| Scale Smallest Increment | 10.0 REVOLUTIONS PER MINUTE AND 1000.0 REVOLUTIONS PER MINUTE |
| Manual Reset | PROVIDED |
| Scale Measurement Unit | REVOLUTIONS PER MINUTE |
| Accessory Components and Quantity | 2 CONICAL POINTS,RUBBER,1 DRIVESHAFT |
| Pointer Quantity | 2 |
| Unit Type | CHRONOMETRIC |
| Speed Selector | NOT PROVIDED |
| Scale Measurement Range | +0.0 TO 9.0 |
| Carrying Case | PROVIDED |
| Time Interval in Seconds | 6.0 |
| Operating Range | +0.0 TO 10000.0 FEET PER MINUTE AND +0.0 TO 10000.0 REVOLUTIONS PER MINUTE FT |
| Measurement Unit | FEET PER MINUTE AND REVOLUTIONS PER MINUTE |
| 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 |
|---|---|
| 145 | 3/9 Design control — primary reference U.S. Government activity |
NSN 6680-00-490-3435 is a Tachometer,mechanical,handheld, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
Key specifications for 6680-00-490-3435: Scale Quantity: 2; Scale Smallest Increment: 10.0 REVOLUTIONS PER MINUTE AND 1000.0 REVOLUTIONS PER MINUTE; Manual Reset: PROVIDED; Scale Measurement Unit: REVOLUTIONS PER MINUTE. 13 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.