The Lens Measuring Instrument,ophtha, cataloged under National Stock Number 6540-01-246-0196, 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 Duffens Optical 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6540-01-246-0196 |
| Primary Part Number | RT-2 |
| Item Name | Lens Measuring Instrument,ophtha |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Duffens Optical Inc |
| Status | ACTIVE |
| Component and Quantity | SCALE,1 |
| 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 |
|---|---|
| RT-2 PRIMARY | Duffens Optical Inc (USA) |
NSN 6540-01-246-0196 is a Lens Measuring Instrument,ophtha, manufactured by Duffens Optical Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-246-0196 has 1 manufacturer part number on file: RT-2 (Duffens Optical Inc).
Key specifications for RT-2: Component and Quantity: SCALE,1; Special Features: USED WITH SLIT LIGHT,MDL. SL-6E; END ITEM NSN 6540-01-182-3770; Part Name Assigned by Controlling Agency: LENS MEASURING INSTR OPHTH SCALE E.I. NSN6540011823770 SLIT LT. 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.