The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-252-2946, 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of the Instruments and Laboratory Equipment group. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments (FSG 66) |
| Parameter | Value |
|---|---|
| NSN | 6680-01-252-2946 |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Reference | Meaning |
|---|---|
| MODEL 421 FREON | C/1 Advisory reference — outside the item-of-supply concept Hersey Measurement Co Div of Miller Industries Inc |
| 421 | 3/9 Design control — primary reference Cornell Pump Co Affil of Roper Industries Inc |
| 421 | 5/9 Secondary reference Hersey Measurement Co Div of Miller Industries Inc |
| M0DEL 421 FRE0N | C/1 Advisory reference — outside the item-of-supply concept Hersey Measurement Co Div of Miller Industries Inc |
| 77644-27X1PC4 | 5/2 Secondary reference U.S. Government activity |
NSN 6680-01-252-2946 is a Indicator,sight,liquid, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
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.