This lens is marked only with a focal length and numerical aperture. The working distance would not allow it to be parfocal with other objectives on a nosepiece. It found favor for use on the various simple modular workshop microscopes and applications requiring a long working distance. Great condition with a clear view. 

Focal length 32mm

Numerical aperture 0.10

Objective thread RMS standard

Achromatic correction, not flat-field

Tube length could vary, but 160mm is nominal