The Indicator,vertical Velocity, cataloged under National Stock Number 6610-01-552-7157, is classified within Federal Supply Class 6610 (Flight Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is United Instruments Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6610-01-552-7157 |
| Primary Part Number | 7120, CODE C.81 |
| Item Name | Indicator,vertical Velocity |
| FSC / FSG | 6610 / 66 — Flight Instruments |
| Manufacturer | United Instruments Inc. |
| Status | ACTIVE |
| Usage Design | VERTICAL SPEED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7120, CODE C.81 PRIMARY | United Instruments Inc. (USA) |
| Reference | Meaning |
|---|---|
| 7120C81 | 5/9 Secondary reference United Instruments Inc. |
NSN 6610-01-552-7157 is a Indicator,vertical Velocity, manufactured by United Instruments Inc., classified under FSC 6610, Flight Instruments. Status: active.
NSN 6610-01-552-7157 has 1 manufacturer part number on file: 7120, CODE C.81 (United Instruments Inc.).
Key specifications for 7120, CODE C.81: Usage Design: VERTICAL SPEED; Part Name Assigned by Controlling Agency: VERTICAL SPEED; End Item Identification: HELICOPTER MI-17. 1 specification is 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.