PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R900Tonometer,ophthalmic

Lombart Brothers, Inc. · NSN 6540-01-549-9522 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-549-9522 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-549-9522. Primary manufacturer part number: R900.
Features
  • Tonometer,ophthalmic — FSC 6540
  • 4 verified cross-references
  • Primary manufacturer: Lombart Brothers, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tonometer,ophthalmic, cataloged under National Stock Number 6540-01-549-9522, is classified within Federal Supply Class 6540 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is Lombart Brothers, Inc.. This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-01-549-9522
Primary Part NumberR900
Item NameTonometer,ophthalmic
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerLombart Brothers, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
6515-00-302-602080-2689 SUCCESSOR
Anoscope
Sklar Corporation Dba Sklar Instruments
2530-00-056-2381 INTERCHANGEABLE
Wheel Assembly,pneumatic Tire
3040-00-249-9702400761-1 INTERCHANGEABLE
Gearshaft,spur
Raytheon Company Dba Raytheon
2825-00-388-68932822 INTERCHANGEABLE
Baffle,oil
Northrop Grumman Systems Corporation Div Marine Systems
2530-00-422-98552822 INTERCHANGEABLE
Cylinder Hydraulic
Garrison Manufacturing Inc
5315-00-515-154069433 INTERCHANGEABLE
Pin,straight,headless
Textron Lycoming Inc Williamsport Plant
6850-00-530-52412822 INTERCHANGEABLE
Remover,sealing Compound
Arkema Inc
6920-00-674-6675 INTERCHANGEABLE
Bulkhead Assy,reel
5355-00-709-23882822 INTERCHANGEABLE
Dial,scale
B. C. Ames Incorporated
3110-00-762-6073S614FCHH7P25L02 INTERCHANGEABLE
Bearing,ball,annular
Mpb Corp Div Timken Super Precision
Cross-Reference Index
Part NumberManufacturer
6540NCM071190 Defense Medical Standardization Board (USA)
TOHSR900 Ophthalmic Instruments, Inc. (USA)
2822 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
R900 PRIMARY Lombart Brothers, Inc. (USA)
Related Parts
6515-00-302-6020SUCCESSOR
ANOSCOPE
80-2689
2530-00-056-2381INTERCHANGEABLE
WHEEL ASSEMBLY,PNEUMATIC TIRE
3040-00-249-9702INTERCHANGEABLE
GEARSHAFT,SPUR
400761-1
2825-00-388-6893INTERCHANGEABLE
BAFFLE,OIL
2822
2530-00-422-9855INTERCHANGEABLE
CYLINDER HYDRAULIC
2822
5315-00-515-1540INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
69433
6850-00-530-5241INTERCHANGEABLE
REMOVER,SEALING COMPOUND
2822
6920-00-674-6675INTERCHANGEABLE
BULKHEAD ASSY,REEL
5355-00-709-2388INTERCHANGEABLE
DIAL,SCALE
2822
3110-00-762-6073INTERCHANGEABLE
BEARING,BALL,ANNULAR
S614FCHH7P25L02
5905-00-772-2849INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
B5J1R0
5985-00-955-9920INTERCHANGEABLE
SEAL,WAVEGUIDE
44949

Frequently Asked Questions

What is NSN 6540-01-549-9522?

NSN 6540-01-549-9522 is a Tonometer,ophthalmic, manufactured by Lombart Brothers, Inc., classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-549-9522?

NSN 6540-01-549-9522 has 4 cross-referenced part numbers: 6540NCM071190 (Defense Medical Standardization Board), TOHSR900 (Ophthalmic Instruments, Inc.), 2822 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia), R900 (Lombart Brothers, Inc.).

What NSN replaces 6540-01-549-9522?

There are 12 known substitutes for 6540-01-549-9522: 6515-00-302-6020, 2530-00-056-2381, 3040-00-249-9702 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R900?

Key specifications for R900: Special Features: TONOMETER W/TWO PRISMS FOR THE SLIT LIGHT OPHTHALMIC END ITEM NSN 6540-01-520-7942. FOUND IN ARMY ASSEMBLAGE N315, MEDICAL MATERIEL SET EYE EXAM CLINIC: DEPMEDS; End Item Identification: THE SLIT LIGHT OPHTHALMIC NSN 6540-01-520-7942; Part Name Assigned by Controlling Agency: TONOMETER W/TWO PRISMS FOR SLIT LIGHT OPHTHALMIC. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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