The Chart,vision Acuity Testing, cataloged under National Stock Number 6540-01-524-9782, 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 Western Ophthalmics Corp. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6540-01-524-9782 |
| Primary Part Number | OS-4471 |
| Item Name | Chart,vision Acuity Testing |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Western Ophthalmics Corp |
| Status | ACTIVE |
| Material | PLASTIC OVERALL |
| Test Designation | ROSENBAUM POCKET VISION SCREENER |
| 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 |
|---|---|
| OS-4471 PRIMARY | Western Ophthalmics Corp (USA) |
| Reference | Meaning |
|---|---|
| 04-1447 | 5/1 Secondary reference U.S. Government activity |
| ROSENBAUM POCKET VISION | 5/1 Secondary reference Western Ophthalmics Corp |
NSN 6540-01-524-9782 is a Chart,vision Acuity Testing, manufactured by Western Ophthalmics Corp, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-524-9782 has 1 manufacturer part number on file: OS-4471 (Western Ophthalmics Corp).
Key specifications for OS-4471: Overall Length: 3.500 INCHES NOMINAL IN; Overall Width: 6.500 INCHES NOMINAL IN; Special Features: POCKET EYE CHART; PROVIDES 20/800 DISTANCE EQUIVALENT TESTING WHEN HELD AT A DISTANCE OF 14 INCHES; PRINTED ON DURABLE PLASTIC; INCLUDES MATCHING 20/200 JAEGER NOTATION; PUPIL DIAMETER GAUGE WITH BOTH METRIC AND STANDARD RULERS ON THE REVERSE SIDE IN; Part Name Assigned by Controlling Agency: CHART VISION ACUITY TESTING POCKET SIZE (1) PER PACKAGE. 2 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.