The Transmissometer Set, cataloged under National Stock Number 6660-01-258-4086, is classified within Federal Supply Class 6660 (Meteorological Instruments and Apparatus) of the Instruments and Laboratory Equipment group. The manufacturer of record is Teledyne Instruments, Inc. Dba Teledyne Monitor Labs Div Teledyne Monitor Labs. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6660-01-258-4086 |
| Primary Part Number | 100-6642 |
| Item Name | Transmissometer Set |
| FSC / FSG | 6660 / 66 — Meteorological Instruments and Apparatus |
| Manufacturer | Teledyne Instruments, Inc. Dba Teledyne Monitor Labs Div Teledyne Monitor Labs |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 301/100-6642 | Teledyne Instruments, Inc. Dba Teledyne Monitor Labs Div Teledyne Monitor Labs (USA) |
| 100-6642 PRIMARY | Teledyne Instruments, Inc. Dba Teledyne Monitor Labs Div Teledyne Monitor Labs (USA) |
| Reference | Meaning |
|---|---|
| 301/100-6642 | 5/9 Secondary reference Dynatron Inc |
| 100-6642 | 5/9 Secondary reference Dynatron Inc |
NSN 6660-01-258-4086 is a Transmissometer Set, manufactured by Teledyne Instruments, Inc. Dba Teledyne Monitor Labs Div Teledyne Monitor Labs, classified under FSC 6660, Meteorological Instruments and Apparatus. Status: active.
NSN 6660-01-258-4086 has 2 manufacturer part numbers on file: 301/100-6642 (Teledyne Instruments, Inc. Dba Teledyne Monitor Labs Div Teledyne Monitor Labs), 100-6642 (Teledyne Instruments, Inc. Dba Teledyne Monitor Labs Div Teledyne Monitor Labs).
Key specifications for 100-6642: Special Features: LIGHT SOURCE LIFE-20,000 HRS;ENCLOSURE-NEMA 4 WATERTIGHT;OPTICAL SYSTEM-SINGLE PASS. 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.