Compound Student Microscopes have well-designed heavy and sturdy pressure ...
Eye-Piece - Wide-Field 10X Eye-piece or set of 10X & 15X Huygenian Eye-pieces ...
The BM-9bi reflects friendly design suitable for both the classroom and laboratory environment. Embodied with sturdy C-shaped aluminum alloy die-cast stand, high quality optics and optical coatings, and brass gears, all of the which compose the BM-9bi to resist the toughest of user environments.