The Ophthalmoscope, cataloged under National Stock Number 6540-01-458-7337, is classified within Federal Supply Class 6540 (Ophthalmic Instruments, Equipment, and Supplies) of the Medical, Dental, and Veterinary Equipment group. The manufacturer of record is Welch Allyn, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6540-01-458-7337 |
| Primary Part Number | 12811 |
| Item Name | Ophthalmoscope |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Welch Allyn, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 12811 PRIMARY | Welch Allyn, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 98-2339 | 5/1 Secondary reference U.S. Government activity |
| POCKETSCOPE | 5/1 Secondary reference Welch Allyn, Inc. |
| 12811 | 3/9 Design control — primary reference Welch Allyn Holdings, Inc. |
| POCKETSCOPE | 5/9 Secondary reference Welch Allyn Holdings, Inc. |
NSN 6540-01-458-7337 is a Ophthalmoscope, manufactured by Welch Allyn, Inc., classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-458-7337 has 1 manufacturer part number on file: 12811 (Welch Allyn, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2590-01-599-2586. Verify interchangeability with system specifications before substitution.
Key specifications for 12811: Special Features: 2.5 VOLT; COMPACT; W/HALOGEN LIGHT AND POLARIZED FILTER; SUITABLE FOR CARRYING IN POCKET; INCLUDES HANDLE, RECHARGEABLE BATTERY AND SOFT CASE; AIR FORCE TA SP25D; Part Name Assigned by Controlling Agency: OPHTHALMOSCOPE 2.5 VOLT COMPACT W/HALOGEN LIGHT&POLARIZED FILTER. 0 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.