Eyepieces:   
One DIN HWF10X wide field focusing eyepieces with cross-line reticule and guide pin, and one DIN HWF10X wide field standard eyepiece.    
Viewing Head:   
Binovular or trinocular viewing head, inclined at 30 degrees. The right eyetube is slotted for the orientation of the cross line reticule and the left eyetube is provided with a graduated diopter adjustment. Interpupillary distance is adjustable between 52mm and 72mm.   
Objective Changer:   
Quadrupole revolving ball-bearing nosepiece with one fixed and three centerable objective positions. Two adjustment wrenches included.    
Objectives:   
DIN SM Plan Strain Free objectives. 4X/0.10 NA, 10X/0.25 NA, 40X/0.65 NA. (Magnification factor 1.8X)   
Compensators:   
DIN Standard, 20mm x 6mm, full wave-length retardation plate. (Gypsum, first order red, sensitive tint, 530nm) DIN Standard, 20mm x 6mm, 1/4 wavelength retardation plate. (Mica, 147.3nm)   
Bertrand Lens:   
With field limiting stop mounted in slide for East - West insertion.    
Analyzer:   
Mounted in slide for East - West insertion.    
Polarizer:   
Rotatable polarizer in swing-out mount with detent at 0 and 90 degrees.    
Stage:   
Circular rotatable and centering stage, 150mm diameter, graduated 360 degrees with vernier reading to 0.1 degrees. Equipped with two stage specimen clips. An optional attachable mechanical stage is also available for standard half-sized slides.   
Condenser:    
Strain free Achromatic Condenser, N.A. 1.25, with aperture iris diaphragm and swing-out filter tray. Mounted in a centerable condenser holder with rack and pinion adjustment.    
Illuminators:   
Built in transmitted Koehler illuminator with 6V 30W halogen lamp, transformer and variable rheostat control. Vertical Koehler illuminator with 6V 30W halogen lamp with quick change over device. Transformer and variable rheostat control are supplied in a separate case.    
Focusing Movement:   
Coaxial low-positioned coarse and fine focus controls, graduated to 2 microns per division, are fitted with tension adjustment and safety auto stop.