Thermo Fisher Spectra TECH FTIR microscope 30X cassegrain reflected light objective.
 Sold under Thermo Fisher  Spectra Tech 
 85 degree angle
RMS thread objective for VIS, NIR  to  20 micron wavelength applications
0.996 N.A. Infinity  12/-  SN0384
From Thermo Fisher FTIR Microscope
Excellent condition
Guaranteed