40X LWD Microscope Objective RMS 0-2mm Correction Collar 160mm Nikon? DIC?

High-quality 40X Long Working Distance microscopeobjective with RMS mounting thread and rotating 0-2 mm correction collar.

The original manufacturer identification band is missing, sothe objective is being sold as attributed to Nikon but without guaranteeof manufacturer.

Features:

• 40X magnification (confirmed by stage micrometer)
• Standard RMS thread (0.800\"-36)
• Long Working Distance (LWD)
• Correction collar graduated: 0, 0.17, 0.5, 1, 1.5, 2 mm
• Finite tube length objective (160 mm)

Magnification (40X) verified by comparison with calibrated Zeiss objectives using a stage micrometer

The objective was examined internally under magnification with a vertical illuminator.No phase annulus was observed, suggesting this is not a phase-contrastobjective.

Based on the mechanical construction and correction collar,this appears very similar to Nikon 40X LWD DIC/brightfield objectives used onfinite-tube inverted microscopes, but because the identification band ismissing, the exact manufacturer and optical designation cannot be guaranteed.

Optics are clean with no fungus, separation, scratches, or haze.

Please examine the photographs carefully and satisfyyourself as to compatibility before purchasing.