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Vintage Bausch & Lomb Rayleigh Interferometric Refractometer Vintage Bausch & Lomb Rayleigh Interferometric Refractometer
Rare 1956 Optical Physics Apparatus • Complete Setup with Wooden Case & Accessories
Specialized 1956 Vintage Bausch & Lomb Rayleigh Interferometric Refractometer built on a classic B&L monocular optical microscope chassis. Designed specifically for optical physics and quantitative refractive index measurement, this unit features specialized interference optics rather than standard biological components.
Key Highlight: Includes the original factory-fitted double-slit aperture plate mounted directly in the optical axis beneath the 32mm 0.10 NA objective, along with an integrated calibrated micrometer drum adjustment mechanism for precise fringe displacement measurement. Technical Specifications & Details Manufacturer Bausch & Lomb (Rochester, NY, USA) Model / Instrument Rayleigh Interferometric Refractometer Year of Manufacture 1956 MPN Reference 334571 Optical Configuration Monocular Upright Frame with Substage Mirror Objective Focus 32mm 0.10 NA Objective Specialized Optics Double-Slit Aperture Assembly & Calibrated Micrometer Drum Drive Instrument Condition
- Mechanical Condition: Excellent functionality—all focusing mechanisms, stage controls, coarse/fine adjustment knobs, and micrometer drum dials turn smoothly and respond precisely.
- Cosmetic Condition: Vintage pre-owned condition with light cosmetic paint wear consistent with age, studio handling, and careful laboratory storage.
- Optical Setup: Optics are intact; clean double-slit aperture mechanism mounted directly in place.
Package Contents This complete vintage lot includes:
- Bausch & Lomb Rayleigh Interferometric Refractometer Scope Unit
- Specialized Double-Slit Aperture & Micrometer Stage Assembly
- Original B&L 32mm 0.10 NA Objective Lens
- Fisher Hausser Hemacytometer Kit (Cat #3100 Neubauer Hy-Lite Ultra Plane 1/10mm Dp)
- Original Fitted Bausch & Lomb Solid Wooden Carrying Case
Shipping & Handling
This fine optical instrument will be packed with extreme care with generous shock-absorbing cushion around both the wooden case and the scope body—to ensure safe transit. Note - will use the factory screw that secures the wooden case to the bottom of the microscope base.
GehlTech LLC — Quality Industrial, Laboratory & Optical Equipment | Sold As Pictured
