The Chart Set,vision Acuity Testing, cataloged under National Stock Number 6540-00-598-8075, 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 Richmond Products Inc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: SE.
| Parameter | Value |
|---|---|
| NSN | 6540-00-598-8075 |
| Primary Part Number | 4742R |
| Item Name | Chart Set,vision Acuity Testing |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Richmond Products Inc |
| Status | ACTIVE |
| Obverse Side Figure Arrangement | UNRELATED LETTERS |
| Eyelet Location | TOP CENTER |
| Hinge Feature | INCLUDED |
| Vision Type | DISTANT |
| Unit Quantity Per Set | 3 |
| 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 | SE |
| Part Number | Manufacturer |
|---|---|
| 4742R PRIMARY | Richmond Products Inc (USA) |
| 474200 PRIMARY | Good-Lite Co Div Good-Lite Company (USA) |
| Reference | Meaning |
|---|---|
| MILC36228 | 5/1 Secondary reference U.S. Government activity |
| 6540-00-598-8075 | 5/9 Secondary reference Richmond Products Inc |
NSN 6540-00-598-8075 is a Chart Set,vision Acuity Testing, manufactured by Richmond Products Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-00-598-8075 has 2 manufacturer part numbers on file: 4742R (Richmond Products Inc), 474200 (Good-Lite Co Div Good-Lite Company).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-493-8770. Verify interchangeability with system specifications before substitution.
Key specifications for 4742R: Obverse Side Figure Arrangement: UNRELATED LETTERS; Eyelet Location: TOP CENTER; Overall Length: 23.500 INCHES NOMINAL IN; Overall Width: 11.250 INCHES NOMINAL IN. 5 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.